Methods for the early diagnosis of ovarian cancer

ABSTRACT

The disclosed nucleic acid primer sets, used in combination with quantitative amplification (PCR) of tissue cDNA, can indicate the presence of specific proteases in a tissue sample. Specifically, the present invention relates to expression of hepsin protease. The detected proteases are themselves specifically overexpressed in certain cancers, and the presence of their genetic precursors may serve for early detection of associated ovarian and other malignancies, and for the design of interactive therapies for cancer treatment.

CROSS-REFERENCE TO RELATED APPLICATIONS

This is a continuation-in-part application which claims the benefit of priority under 35 USC §120 of U.S. Ser. No. 09/861,966, filed May 21, 2001, now U.S. Pat. No. 6,518,028, which is a divisional application of U.S. Ser. No. 09/510,738, now U.S. Pat. No. 6,268,165, which claims the benefit of priority under 35 USC §120 of U.S. Ser. No. 09/039,211, filed Mar. 14, 1998, which claims benefit of provisional patent application U.S. Ser. No. 60/041,404, filed Mar. 19, 1997, now abandoned.

BACKGROUND OF THE INVENTION

1. Field of the Invention

Generally, the present invention relates to the fields of molecular biology and medicine. More specifically, the present invention invention is in the field of cancer research, especially ovarian cancer diagnosis.

2. Background of the Invention

In order for malignant cells to grow, spread or metastasize, they must have the capacity to invade local host tissue, dissociate or shed from the primary tumor, enter and survive in the bloodstream, implant by invasion into the surface of the target organ and establish an environment conducive for new colony growth (including the induction of angiogenic and growth factors). During this progression, natural tissue barriers such as basement membranes and connective tissue have to be degraded. These barriers include collagen, laminin, fibronectin, proteoglycans and extracellular matrix glycoproteins. Degradation of these natural barriers, both those surrounding the primary tumor and at the sites of metastatic invasion, is believed to be brought about by the action of a matrix of extracellular proteases.

Proteases have been classified into four families: serine proteases, metallo-proteases, aspartic proteases and cysteine proteases. Many proteases have been shown to be involved in human disease processes and these enzymes are targets for the development of inhibitors as new therapeutic agents. Certain individual proteases are induced and overexpressed in a diverse group of cancers, and as such, are potential candidates for markers of early diagnosis and targets for possible therapeutic intervention. A group of examples are shown in Table 1.

TABLE 1 Known proteases expressed in various cancers Gastric Brain Breast Ovarian Serine uPA uPA NES-1 NES-1 Proteases: PAI-1 PAI-1 uPA uPA tPA PAI-2 Cysteine Cathepsin B Cathepsin L Cathepsin B Cathepsin B Proteases: Cathepsin L Cathepsin L Cathepsin L Metallo- Matrilysin* Matrilysin Stromelysin-3 MMP-2 proteases: Collagenase* Stromelysin MMP-8 Stromelysin-1* Gelatinase B MMP-9 Gelatinase A uPA, Urokinase-type plasminogen activator; tPA, Tissue-type plasminogen activator; PAI-I, Piasminogen activator 0 inhibitors; PAI-2, Piasminogen activator inhibitors; NES-1, Normal epithelial cell-specific-1; MMP, Matrix P metallo-protease. *Overexpressed in gastrointestinal ulcers.

There is a good body of evidence supporting the downregulation or inhibition of individual proteases and the reduction in invasive capacity or malignancy. In work by Clark et al., inhibition of in vitro growth of human small cell lung cancer was demonstrated using a general serine protease inhibitor. More recently, Torres-Rosedo et al., [Proc. Natl. Acad. Sci. USA. 90, 7181-7185 (1993)] demonstrated an inhibition of hepatoma tumor cell growth using specific antisense inhibitors for the serine protease hepsin gene. Metastatic potential of melanoma cells has also been shown to be reduced in a mouse model using a synthetic inhibitor (batimastat) of metallo-proteases. Powell et al. [Cancer Research, 53, 417-422 (1993)] presented evidence to confirm that the expression of extracellular proteases in a non-metastatic prostate cancer cell line enhances their malignant progression. Specifically, enhanced metastasis was demonstrated after introducing and expressing the PUMP-1 metallo-protease gene. There is also a body of data to support the notion that expression of cell surface proteases on relatively non-metastatic cell types increases the invasive potential of such cells.

To date, ovarian cancer remains the number one killer of women with gynecologic malignant hyperplasia. Approximately 75% of women diagnosed with such cancers are already at an advanced stage (III and IV) of the disease at their initial diagnosis. During the past 20 years, neither diagnosis nor five-year survival rates have greatly improved for these patients. This is substantially due to the high percentage of high-stage initial detection of the disease. Therefore, the challenge remains to develop new markers that improve early diagnosis and thereby reduce the percentage of high-stage initial diagnoses. The ability to disengage from one tissue and re-engage the surface of another tissue is what provides for the morbidity and mortality associated with this disease. Therefore, extracellular proteases may be good candidates for markers of malignant ovarian hyperplasia.

Thus, the prior art is deficient in a tumor marker useful as an indicator of early disease, particularly for ovarian cancers. The present invention fulfills this long-standing need and desire in the art.

SUMMARY OF THE INVENTION

This invention allows for the detection of cancer, especially ovarian cancer, by screening for hepsin mRNA in tissue, which is indicative of the hepsin protease, which is shown herein to be specifically associated with the surface of 80 percent of ovarian and other tumors. Proteases are considered to be an integral part of tumor growth and metastasis, and therefore, markers indicative of their presence or absence are useful for the diagnosis of cancer. Furthermore, the present invention is useful for treatment (i.e., by inhibiting hepsin or expression of hepsin), for targeted therapy, for vaccination, etc.

In one embodiment of the present invention, there is provided a method for detecting malignant hyperplasia in a biological sample by detecting hepsin mRNA in the sample. The presence of the hepsin mRNA in the sample is indicative of the presence of malignant hyperplasia, and the absense of the hepsin mRNA in the sample is indicative of the absence of malignant hyperplasia.

In another embodiment of the present invention, there are provided methods of inhibiting expression of hepsin in a cell by introducing into a cell a vector encoding an antisense hepsin mRNA or an antibody that binds the hepsin protein.

In yet another embodiment of the present invention, there is provided a method of targeted therapy to an individual, comprising the step of administering a compound to an individual, wherein the compound has a targeting moiety and a therapeutic moiety, wherein the targeting moiety is specific for hepsin.

In still yet another embodiment of the present invention, there are provided methods of vaccinating an individual against hepsin or produce immune-activated cells directed toward hepsin by inoculating an individual with a hepsin protein or fragment thereof, wherein the hepsin protein or fragment thereof lack hepsin protease activity.

In still another embodiment of the present invention, there are provided compositions comprising immunogenic fragments of hepsin protein or an oligonucleotide having a sequence complementary to SEQ ID No. 188. Also embodied is a method of treating a neoplastic state in an individual in need of such treatment with an effective dose of the above-described oligonucleotide.

In another embodiment of the present invention, there is provided a method of screening for compounds that inhibit hepsin activity, comprising the steps of contacting a sample with a compound, wherein the sample comprises hepsin protein; and assaying for hepsin protease activity. A decrease in the hepsin protease activity in the presence of the compound relative to hepsin protease activity in the absence of the compound is indicative of a compound that inhibits hepsin activity.

Other and further aspects, features, and advantages of the present invention will be apparent from the following description of the presently preferred embodiments of the invention. These embodiments are given for the purpose of disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The appended drawings have been included herein so that the above-recited features, advantages and objects of the invention will become clear and can be understood in detail. These drawings form a part of the specification. It is to be noted, however, that the appended drawings illustrate preferred embodiments of the invention and should not be considered to limit the scope of the invention.

FIG. 1 shows agarose gel comparison of PCR products derived from normal (lanes 1 and 3) and carcinoma cDNA (lanes 2 and 4). PCR products in lanes 1 and 2 were generated by primer pair SEQ ID NOs. 1 and 2 (sense His and antisense Asp) whereas PCR products in lanes 3 and 4 were generated by primer pair SEQ ID NOs. 1 and 3 (sense His and antisense Ser). AS1 antisense Asp: AS2 antisense Ser.

FIG. 2 shows Northern blot analysis of ovarian tumors using hepsin, SCCE, PUMP-1, TADG-14 and β-tubulin probes.

FIG. 3 shows agarose gel comparison of PCR products derived from amplification with serine protease redundant primers. PCR products were generated from normal cDNA (N, lanes 1 and 3) or rumor cDNA (T; lanes 2 and 4) using primer pair SEQ ID NOs. 1 and 2 (lanes 1 and 2) or primer pair SEQ ID NOs. 1 and 3 (lanes 3 and 4).

FIG. 4 shows agarose gel comparison of PCR products derived from normal or ovarian tumor cells using cysteine protease redundant primers. Lane 1, normal ovary; lane 2, low malignant potential tumor; lane 3 serous carcinoma; lane 4, mucinous carcinoma; lane 5, clear cell carcinoma.

FIG. 5 shows agarose gel comparison of PCR products derived from normal or ovarian tumor cells using metallo-protease redundant primers. Lane 1, normal ovary; lane 2, low malignant potential rumor; lane 3, serous carcinoma; lane 4, mucinous carcinoma lane 5, clear cell carcinoma.

FIG. 6 shows agarose gel comparison of PCR products derived from normal ovary (Lanes 1-3), low malignant potential tumors (Lanes 4-8), and ovarian carcinomas (Lanes 9-12) using specific primers directed towards the serine protease hepsin.

FIG. 7 shows hepsin expression levels in normal ovary or various ovarian carcinoma, LMP, low malignant potential.

FIG. 8 shows serine protease stratum corneum chymotrypsin enzyme (SCCE) expression in normal ovary (lanes 1-3), low malignant potential tumors (lanes 4-8) and ovarian carcinomas (lanes 9-13).

FIG. 9 shows metallo-protease PUMP-1 (MMP-7) gene expression in normal (lanes 1-2) and ovarian carcinomas tissue (Lanes 3-10).

FIG. 10A shows Northern blot analysis of hepsin expression in normal ovary and ovarian carcinomas. Lane 1, normal ovary (case 10); lane 2, serous carcinoma (case 35); lane 3, mucinous carcinoma (case 48); lane 4, endometrioid carcinoma (case 51); and lane 5, clear cell carcinoma (case 54). In cases 35, 51 and 54, more than a 10-fold increase in the hepsin 1.8 kb transcript abundance was observed. FIG. 10B shows Northern blot analysis of hepsin in normal human fetal tissues. Significant overexpression of the hepsin transcript is noted in both fetal liver and feral kidney. FIG. 10C shows Northern blot analysis of hepsin in adult tissues. Notably, hepsin overexpression is not observed in normal adult tissue. Slight expression above the background level is observed in the adult prostate.

FIG. 11A shows a comparison of hepsin cDNA expression in normal ovary (N), mucinous (M) and serous (S) low malignant potential (LMP) tumors and carcinomas (CA) by quantitative PCR. β-tubulin was used as an internal control. FIG. 11B shows the ratio of hepsin:β-tubulin expression in normal ovary, LMP tumor, and ovarian carcinoma. Hepsin mRNA expression levels were significantly elevated in LMP tumors, (p<0.005) and carcinomas (p<0.0001) compared to levels in normal ovary. All 10 cases of normal ovaries showed a relatively low level of hepsin mRNA expression.

FIG. 12A shows northern blot analysis of mRNA expression of the SCCE gene in fetal tissue. FIG. 12B shows northern blot analysis of mRNA expression of the SCCE gene in ovarian tissue.

FIG. 13A shows a comparison of SCCE cDNA expression in normal ovary (N), mucinous (M) and serous (S) low malignant potential (LMP) tumors and carcinomas (CA) by quantitative PCR. FIG. 13B shows a bar graph comparing the ratio of SCCE to β-tubulin expression in 10 normal and 44 ovarian carcinoma tissues.

FIG. 14 shows a comparison of protease M expression in normal ovary (N), mucinous (M) and serous (S) low malignant potential (LMP) tumors and carcinomas (CA) by quantitative PCR.

FIG. 15 shows the amino acid residues 1-57 of TADG-12 and the site of insertion near the His 5′-end.

FIG. 16A shows northern blot analysis comparing TADG-14 expression in normal and ovarian carcinoma tissues. FIG. 16B shows preliminary quantitative PCR amplification of normal and carcinoma cDNAs using specific primers for TADG-14.

FIG. 17A shows northern blot analysis of PUMP-1 gene expression in human fetal tissue. FIG. 17B shows northern blot analysis of PUMP-1 gene expression in normal ovary and ovarian carcinomas.

FIG. 18A shows a comparison of PUMP-1 expression in normal ovary (N), mucinous (M) and serous (S) low malignant potential (LMP) tumors and carcinomas (CA) using quantitative PCR with an internal β-tubulin control. FIG. 18B shows the ratio of PUMP-1 mRNA expression compared to that of internal control β-tubulin in 10 normal and 44 ovarian carcinomas.

FIG. 19 shows agarose gel comparison of PCR products for the hepsin, SCCE, protease M, PUMP-1 and Cathepsin L genes in normal ovary (N) mucinous (M) and serous (S) low malignant potential (LMP) tumors and carcinomas (CA).

FIG. 20 shows CD8⁺CTL recognition of hepsin 170-178 peptide in a 5 hour ⁵¹Cr release assay. Targets were LCL loaded with hepsin 170-178 (closed circles) and control LCL (open circles).

FIG. 21 shows CD8⁺CTL recognition of hepsin 172-180 peptide in a 5 hr ⁵¹Cr release assay. Targets were LCL loaded with hepsin 172-180 (closed circles) and control LCL (open circles).

DETAILED DESCRIPTION OF THE INVENTION

This invention identifies hepsin protease as a marker for ovarian tumor cells. In various combinations with other proteases, hepsin expression is characteristic of individual tumor types. Such information can provide the basis for diagnostic tests (assays or immunohistochemistry) and prognostic evaluation (depending on the display pattern). Long-term treatment of tumor growth, invasion and metastasis has not succeeded with existing chemotherapeutic agents. Most tumors become resistant to drugs after multiple cycles of chemotherapy. The present invention identifies hepsin as a new therapeutic intervention target utilizing either antibodies directed at the protease, antisense vehicles for downregulation or protease inhibitors both from established inhibition data and/or for the design of new drugs.

A primary object of the present invention is a method for detecting the presence of malignant hyperplasia in a tissue sample. The cancer is detected by analyzing a biological sample for the presence of markers to proteases that are specific indicators of certain types of cancer cells. This object may be accomplished by isolating mRNA from a sample or by detection of proteins by polyclonal or preferably monoclonal antibodies. When using mRNA detection, the method may be carried out by converting the isolated mRNA to cDNA according to standard methods; treating the converted cDNA with amplification reaction reagents (such as cDNA PCR reaction reagents) in a container along with an appropriate mixture of nucleic acid primers selected from the list in Table 2; reacting the contents of the container to produce amplification products; and analyzing the amplification products to detect the presence of malignant hyperplasia markers in the sample. The analyzing step may be accomplished using Northern Blot analysis to detect the presence of malignant hyperplasia markers in the amplification product. Northern Blot analysis is known in the art. The analysis step may be further accomplished by quantitatively detecting the presence of malignant hyperplasia marker in the amplification products, and comparing the quantity of marker detected against a panel of expected values for known presence or absence in normal and malignant tissue derived using similar primers.

The present invention also provides various nucleic acid sequences that are useful in the methods disclosed herein. These nucleic acid sequences are listed in Table 2. It is anticipated that these nucleic acid sequences be used in mixtures to accomplish the utility of this invention. Features of such mixtures include: SEQ ID No. 1 with SEQ ID No. 2; SEQ ID No. 1 with SEQ ID No. 3; SEQ ID No. 4 with SEQ ID No. 5; SEQ ID No. 6 with SEQ ID No. 7; SEQ ID No. 8 with SEQ ID No. 9; and SEQ ID No. 10 with SEQ ID No. 11. The skilled artisan may be able to develop other nucleic acid sequences and mixtures thereof to accomplish the benefit of this invention, but it is advantageous to have the sequences listed in Table 2 available without undue experimentation.

The present invention provides a method for detecting malignant hyperplasia in a biological sample, comprising the steps of isolating mRNA from the sample; and detecting hepsin mRNA in the sample. The presence of the hepsin mRNA in the sample is indicative of the presence of malignant hyperplasia, wherein the absense of the hepsin mRNA in the sample is indicative of the absence of malignant hyperplasia. This method may further comprise the step of comparing the hepsin mRNA to reference information, wherein the comparison provides a diagnosis and/or determines a treatment of the malignant hyperplasia. A typical means of detection of hepsin mRNA is by PCR amplification, which, preferably, uses primers shown in SEQ ID No. 8 and SEQ ID No. 9. Representative biological samples are blood, urine, saliva, tears, interstitial fluid, ascites fluid, tumor tissue biopsy and circulating tumor cells.

The present invention is further directed toward a method of inhibiting expression of hepsin in a cell, comprising the step of introducing into a cell a vector comprises a hepsin gene operably linked in opposite orientation to elements necessary for expression, wherein expression of the vector produces hepsin antisense mRNA in the cell. The hepsin antisense mRNA hybridizes to endogenous hepsin mRNA, thereby inhibiting expression of hepsin in the cell.

The present invention is still further directed toward a method of inhibiting a hepsin protein in a cell, comprising the step of introducing an antibody into a cell, wherein the antibody is specific for a hepsin protein or a fragment thereof. Binding of the antibody to hepsin inhibits the hepsin protein. Preferably, the hepsin fragment is a 9-residue fragment up to a 20-residue fragment, and more preferably, the 9-residue fragment is SEQ ID Nos. 28, 29, 30, 31, 88, 89, 108, 109, 128, 129, 148, 149, 150, 151, 152, 153 and 154.

The present invention is also directed toward a method of targeted therapy to an individual, comprising the step of administering a compound to an individual, wherein the compound has a targeting moiety and a therapeutic moiety, and wherein the targeting moiety is specific for hepsin. Preferably, the targeting moiety is an antibody specific for hepsin or a ligand or ligand binding domain that binds hepsin. Likewise, the therapeutic moiety is preferably a radioisotope, a toxin, a chemotherapeutic agent, an immune stimulant or cytotoxic agent. Generally, the individual suffers from a disease such as ovarian cancer, lung cancer, prostate cancer, colon cancer or another cancer in which hepsin is overexpressed.

The present invention is additionally directed toward a method of vaccinating an individual against hepsin, comprising the steps of inoculating an individual with a hepsin protein or fragment thereof, wherein the hepsin protein or fragment thereof lack hepsin protease activity. Inoculation with the hepsin protein, or fragment thereof, elicits an immune response in the individual, thereby vaccinating the individual against hepsin. Generally, this method is applicable when the individual has cancer, is suspected of having cancer or is at risk of getting cancer. Sequences of preferred hepsin proteins or fragment thereof are shown in SEQ ID Nos. 28, 29, 30, 31, 88, 89, 108, 109, 128, 129, 148, 149, 150, 151, 152, 153 and 154.

The present invention is yet directed toward a method of producing immune-activated cells directed toward hepsin, comprising the steps of exposing immune cells to hepsin protein or fragment thereof that lacks hepsin protease activity. Typically, exposure to hepsin protein or fragment thereof activates the immune cells, thereby producing immune-activated cells directed toward hepsin. Generally, the immune-activated cells are B-cells, T-cells and/or dendritic cells. Preferably, the hepsin fragment is a 9-residue fragment up to a 20-residue fragment, and more preferably, the 9-residue fragment is SEQ ID Nos. 28, 29, 30, 31, 88, 89, 108, 109, 128, 129, 148, 149, 150, 151, 152, 153 or 154. Oftentimes, the dendritic cells are isolated from an individual prior to exposure and then reintroduced into the individual subsequent to the exposure. Typically, the individual has cancer, is suspected of having cancer or is at risk of getting cancer.

The present invention is further directed toward an immunogenic composition, comprising an immunogenic fragment of hepsin protein and an appropriate adjuvant. Preferably, the fragment is a 9-residue fragment up to a 20-residue fragment, and more preferably, the 9-residue fragment is SEQ ID Nos. 28, 29, 30, 31, 88, 89, 108, 109, 128, 129, 148, 149, 150, 151, 152, 153 or 154.

The present invention is further directed toward an oligonucleotide having a sequence complementary to SEQ ID No. 188 or a frgament thereof. The present invention further provides a composition comprising the above-described oligonucleotide and a physiologically acceptable carrier, and a method of treating a neoplastic state in an individual in need of such treatment, comprising the step of administering to the individual an effective dose of the above-described oligonucleotide. Typically, the neoplastic state may be ovarian cancer, breast cancer, lung cancer, colon cancer, prostate cancer or another cancer in which hepsin is overexpressed.

The present invention is still further directed toward a method of screening for compounds that inhibit hepsin activity, comprising the steps of contacting a sample with a compound, wherein the sample comprises hepsin protein; and assaying for hepsin protease activity. A decrease in the hepsin protease activity in the presence of the compound relative to hepsin protease activity in the absence of the compound is indicative of a compound that inhibits hepsin activity.

It will be apparent to one skilled in the art that various substitutions and modifications may be made to the invention disclosed herein without departing from the scope and spirit of the invention.

In accordance with the present invention there may be employed conventional molecular biology, microbiology, and recombinant DNA techniques within the skill of the art. Such techniques are explained fully in the literature. See, e.g., Maniatis, Fritsch & Sambrook, “Molecular Cloning: A Laboratory Manual (1982); “DNA Cloning: A Practical Approach,” Volumes I and II (D. N. Glover ed. 1985); “Oligonucleotide Synthesis” (M. J. Gait ed. 1984); “Nucleic Acid Hybridization” (B. D. Hames & S. J. Higgins eds. 1985); “Transcription and Translation” (B. D. Hames & S. J. Higgins eds. 1984); “Animal Cell Culture” (R. I. Freshney, ed. 1986); “Immobilized Cells And Enzymes” (IRL Press, 1986); B. Perbal, “A Practical Guide To Molecular Cloning” (1984). Therefore, if appearing herein, the following terms shall have the definitions set out below.

As used herein, the term “cDNA” shall refer to the DNA copy of the mRNA transcript of a gene.

As used herein, the term “PCR” refers to the polymerase chain reaction that is the subject of U.S. Pat. Nos. 4,683,195 and 4,683,202 to Mullis, as well as other improvements now known in the art.

The present invention comprises a vector comprising a DNA sequence which encodes a hepsin protein, wherein said vector is capable of replication in a host, and comprises, in operable linkage: a) an origin of replication; b) a promoter; and c) a DNA sequence coding for said hepsin protein. Preferably, the vector of the present invention contains a portion of the DNA sequence shown in SEQ ID No. 188. Vectors may be used to amplify and/or express nucleic acid encoding a hepsin protein, a fragment of hepsin protein, or an antisense hepsin mRNA.

An expression vector is a replicable construct in which a nucleic acid sequence encoding a polypeptide is operably linked to suitable control sequences capable of effecting expression of the polypeptide in a cell. The need for such control sequences will vary depending upon the cell selected and the transformation method chosen. Generally, control sequences include a transcriptional promoter and/or enhancer, suitable mRNA ribosomal binding sites and sequences which control the termination of transcription and translation. Methods which are well known to those skilled in the art can be used to construct expression vectors containing appropriate transcriptional and translational control signals. See, for example, techniques described in Sambrook et al., 1989, Molecular Cloning: A Laboratory Manual (2nd Ed.), Cold Spring Harbor Press, N.Y. A gene and its transcription control sequences are defined as being “operably linked” if the transcription control sequences effectively control transcription of the gene. Vectors of the invention include, but are not limited to, plasmid vectors and viral vectors. Preferred viral vectors of the invention are those derived from retroviruses, adenovirus, adeno-associated virus, SV40 virus, or herpes viruses.

As used herein, the term “host” is meant to include not only prokaryotes but also eukaryotes such as yeast, plant and animal cells. A recombinant DNA molecule or gene which encodes a human hepsin protein of the present invention can be used to transform a host using any of the techniques commonly known to those of ordinary skill in the art. Especially preferred is the use of a vector containing coding sequences for the gene which encodes a human hepsin protein of the present invention for purposes of prokaryote transformation. Prokaryotic hosts may include E. coli, S. tymphimurium, Serratia marcescens and Bacillus subtilis. Eukaryotic hosts include yeasts such as Pichia pastoris, mammalian cells and insect cells.

The term “oligonucleotide”, as used herein, is defined as a molecule comprised of two or more ribonucleotides, preferably more than three. Its exact size will depend upon many factors, which, in turn, depend upon the ultimate function and use of the oligonucleotide. The term “primer”, as used herein, refers to an oligonucleotide, whether occurring naturally (as in a purified restriction digest) or produced synthetically, and which is capable of initiating synthesis of a strand complementary to a nucleic acid when placed under appropriate conditions, i.e., in the presence of nucleotides and an inducing agent, such as a DNA polymerase, and at a suitable temperature and pH. The primer may be either single-stranded or double-stranded and must be sufficiently long to prime the synthesis of the desired extension product in the presence of the inducing agent. The exact length of the primer will depend upon many factors, including temperature, sequence and/or homology of primer and the method used. For example, in diagnostic applications, the oligonucleotide primer typically contains 15-25 or more nucleotides, depending upon the complexity of the target sequence, although it may contain fewer nucleotides.

The primers herein are selected to be “substantially” complementary to particular target DNA sequences. This means that the primers must be sufficiently complementary to hybridize with their respective strands. Therefore, the primer sequence need not reflect the exact sequence of the template. For example, a non-complementary nucleotide fragment (i.e., containing a restriction site) may be attached to the 5′ end of the primer, with the remainder of the primer sequence being complementary to the strand. Alternatively, non-complementary bases or longer sequences can be interspersed into the primer, provided that the primer sequence has sufficient complementary with the sequence to hybridize therewith and form the template for synthesis of the extension product.

The probe to which the DNA of the invention hybridizes preferably consists of a sequence of at least 20 consecutive nucleotides, more preferably 40 nucleotides, even more preferably 50 nucleotides, and most preferably 100 nucleotides or more (up to 100%) of the coding sequence of the nucleotides listed in SEQ ID No. 188 or the complement thereof. Such a probe is useful for detecting expression of hepsin in a cell by a method including the steps of (a) contacting mRNA obtained from the cell with a labeled hepsin hybridization probe; and (b) detecting hybridization of the probe with the mRNA.

As used herein, “substantially pure DNA” means DNA that is not part of a milieu in which the DNA naturally occurs, by virtue of separation (partial or total purification) of some or all of the molecules of that milieu, or by virtue of alteration of sequences that flank the claimed DNA. The term therefore includes, for example, a recombinant DNA which is incorporated into a vector, into an autonomously replicating plasmid or virus, or into the genomic DNA of a prokaryote or eukaryote; or which exists as a separate molecule (e.g., a cDNA or a genomic or cDNA fragment produced by polymerase chain reaction (PCR) or restriction endonuclease digestion) independent of other sequences. It also includes a recombinant DNA which is part of a hybrid gene encoding additional polypeptide sequence, e.g., a fusion protein. Also included is a recombinant DNA which includes a portion of the nucleotides listed in SEQ ID No. 188 and which encodes an alternative splice variant of hepsin.

The DNA may have at least about 70% sequence identity to the coding sequence of the nucleotides listed in SEQ ID No. 188, preferably at least 75% (e.g., at least 80%); and most preferably at least 90%. The identity between two sequences is a direct function of the number of matching or identical positions. When a position in both of the two sequences is occupied by the same monomeric subunit, e.g., if a given position is occupied by an adenine in each of two DNA molecules, then they are identical at that position. For example, if 7 positions in a sequence 10 nucleotides in length are identical to the corresponding positions in a second 10-nucleotide sequence, then the two sequences have 70% sequence identity. The length of comparison sequences will generally be at least 50 nucleotides, preferably at least 60 nucleotides, more preferably at least 75 nucleotides, and most preferably 100 nucleotides. Sequence identity is typically measured using sequence analysis software (e.g., Sequence Analysis Software Package of the Genetics Computer Group (GCG), University of Wisconsin Biotechnology Center, 1710 University Avenue, Madison, Wis. 53705).

Further included in this invention are hepsin proteins which are encoded, at least in part, by portions of SEQ ID No. 188, e.g., products of alternative mRNA splicing or alternative protein processing events, or in which a section of hepsin sequence has been deleted. The fragment, or the intact hepsin polypeptide, may be covalently linked to another polypeptide, e.g., one which acts as a label, a ligand or a means to increase antigenicity.

A substantially pure hepsin protein may be obtained, for example, by extraction from a natural source; by expression of a recombinant nucleic acid encoding a hepsin polypeptide; or by chemically synthesizing the protein. Purity can be measured by any appropriate method, e.g., column chromatography, such as immunoaffinity chromatography using an antibody specific for hepsin, polyacrylamide gel electrophoresis, or HPLC analysis. A protein is substantially free of naturally associated components when it is separated from at least some of those contaminants which accompany it in its natural state. Thus, a protein which is chemically synthesized or produced in a cellular system different from the cell from which it naturally originates will be, by definition, substantially free from its naturally associated components. Accordingly, substantially pure proteins include eukaryotic proteins synthesized in E. coli, other prokaryotes, or any other organism in which they do not naturally occur.

In addition to substantially full-length proteins, the invention also includes fragments (e.g., antigenic fragments) of the hepsin protein. As used herein, “fragment,” as applied to a polypeptide, will ordinarily be at least 10 residues, more typically at least 20 residues, and preferably at least 30 (e.g., 50) residues in length, but less than the entire, intact sequence. Fragments of the hepsin protein can be generated by methods known to those skilled in the art, e.g., by enzymatic digestion of naturally occurring or recombinant hepsin protein, by recombinant DNA techniques using an expression vector that encodes a defined fragment of hepsin, or by chemical synthesis. The ability of a candidate fragment to exhibit a characteristic of hepsin (e.g., binding to an antibody specific for hepsin) can be assessed by methods known in the art. Purified hepsin or antigenic fragments of hepsin can be used to generate new antibodies or to test existing antibodies (e.g., as positive controls in a diagnostic assay) by employing standard protocols known to those skilled in the art. Included in this invention is polyclonal antisera generated by using hepsin or a fragment of hepsin as the immunogen in, e.g., rabbits. Standard protocols for monoclonal and polyclonal antibody production known to those skilled in this art are employed. The monoclonal antibodies generated by this procedure can be screened for the ability to identify recombinant hepsin cDNA clones, and to distinguish them from other cDNA clones.

The invention encompasses not only an intact anti-hepsin monoclonal antibody, but also an immunologically-active antibody fragment, e.g., a Fab or (Fab)₂ fragment; an engineered single chain Fv molecule; or a chimeric molecule, e.g., an antibody which contains the binding specificity of one antibody, e.g., of murine origin, and the remaining portions of another antibody, e.g., of human origin.

In one embodiment, the antibody, or a fragment thereof, may be linked to a toxin or to a detectable label, e.g., a radioactive label, non-radioactive isotopic label, fluorescent label, chemiluminescent label, paramagnetic label, enzyme label, or calorimetric label. Examples of suitable toxins include diphtheria toxin, Pseudomonas exotoxin A, ricin, and cholera toxin. Examples of suitable enzyme labels include malate hydrogenase, staphylococcal nuclease, delta-5-steroid isomerase, alcohol dehydrogenase, alpha-glycerol phosphate dehydrogenase, triose phosphate isomerase, peroxidase, alkaline phosphatase, asparaginase, glucose oxidase, beta-galactosidase, ribonuclease, urease, catalase, glucose-6-phosphate dehydrogenase, glucoamylase, acetylcholinesterase, etc. Examples of suitable radioisotopic labels include ³H, ¹²⁵I, ¹³¹I, ³²P, ³⁵S, ¹⁴C, etc.

Paramagnetic isotopes for purposes of in vivo diagnosis can also be used according to the methods of this invention. There are numerous examples of elements that are useful in magnetic resonance imaging. For discussions on in vivo nuclear magnetic resonance imaging, see, for example, Schaefer et al., (1989) JACC 14, 472-480; Shreve et al., (1986) Magn. Reson. Med. 3, 336-340; Wolf, G. L., (1984) Physiol. Chem. Phys. Med. NMR 16, 93-95; Wesbey et al., (1984) Physiol. Chem. Phys. Med. NMR 16, 145-155; Runge et al., (1984) Invest. Radiol. 19, 408-415. Examples of suitable fluorescent labels include a fluorescein label, an isothiocyalate label, a rhodamine label, a phycoerythrin label, a phycocyanin label, an allophycocyanin label, an ophthaldehyde label, a fluorescamine label, etc. Examples of chemiluminescent labels include a luminal label, an isoluminal label, an aromatic acridinium ester label, an imidazole label, an acridinium salt label, an oxalate ester label, a luciferin label, a luciferase label, an aequorin label, etc.

Those of ordinary skill in the art will know of other suitable labels which may be employed in accordance with the present invention. The binding of these labels to antibodies or fragments thereof can be accomplished using standard techniques commonly known and used by those of ordinary skill in the art. Typical techniques are described by Kennedy et al., (1976) Clin. Chim. Acta 70, 1-31; and Schurs et al., (1977) Clin. Chim. Acta 81, 1-40. Coupling techniques mentioned in the latter are the glutaraldehyde method, the periodate method, the dimaleimide method, the m-maleimidobenzyl-N-hydroxy-succinimide ester method. All of these methods are incorporated by reference herein.

Also within the invention is a method of detecting hepsin protein in a biological sample, which includes the steps of contacting the sample with the labeled antibody, e.g., radioactively tagged antibody specific for hepsin, and determining whether the antibody binds to a component of the sample. Antibodies to the hepsin protein can be used in an immunoassay to detect increased levels of hepsin protein expression in tissues suspected of neoplastic transformation. These same uses can be achieved with Northern blot assays and analyses.

As described herein, the invention provides a number of diagnostic advantages and uses. For example, the hepsin protein is useful in diagnosing cancer in different tissues since this protein is highly overexpressed in tumor cells. Antibodies (or antigen-binding fragments thereof) which bind to an epitope specific for hepsin are useful in a method of detecting hepsin protein in a biological sample for diagnosis of cancerous or neoplastic transformation. This method includes the steps of obtaining a biological sample (e.g., cells, blood, plasma, tissue, etc.) from a patient suspected of having cancer, contacting the sample with a labeled antibody (e.g., radioactively tagged antibody) specific for hepsin, and detecting the hepsin protein using standard immunoassay techniques such as an ELISA. Antibody binding to the biological sample indicates that the sample contains a component which specifically binds to an epitope within hepsin.

Likewise, a standard Northern blot assay can be used to ascertain the relative amounts of hepsin mRNA in a cell or tissue obtained from a patient suspected of having cancer, in accordance with conventional Northern hybridization techniques known to those of ordinary skill in the art. This Northern assay uses a hybridization probe, e.g., radiolabelled hepsin cDNA, either containing the full-length, single stranded DNA having a sequence complementary to SEQ ID No. 188, or a fragment of that DNA sequence at least 20 (preferably at least 30, more preferably at least 50, and most preferably at least 100 consecutive nucleotides in length). The DNA hybridization probe can be labeled by any of the many different methods known to those skilled in this art.

The following examples are given for the purpose of illustrating various embodiments of the invention and are not meant to limit the present invention in any fashion:

EXAMPLE 1

Amplification Of Serine Proteases Using Redundant And Specific Primers

Only cDNA preparations deemed free of genomic DNA were used for gene expression analysis. Redundant primers were prepared for serine proteases, metallo-proteases and cysteine protease. The primers were synthesized to consensus sequences of amino acid surrounding the catalytic triad for serine proteases, viz. histidine . . . aspartate . . . and serine. The sequences of both sense (histidine & aspartate) and antisense (aspartate and serine) redundant primers are shown in Table 2.

TABLE 2 SEQ ID PCR Primers 5′→3′ No. Redundant Primers: Serine Protease (histidine) = S1 tgggtigtiacigcigcica(ct)tg 1 Serine Protease (aspartic acid) = AS1 a(ag)ia(ag)igciatitcitticc 2 Serine Protease (serine) = AS11 a(ag)iggiccicci(cg)(ta)(ag)tcicc 3 Cysteine Protease - sense ca(ag)ggica(ag)tg(ct)ggi(ta)(cg)itg(ct)tgg 4 Cysteine Protease - antisense taiccicc(ag)tt(ag)caicc(ct)tc 5 Metallo Protease - sense cci(ac)gitg(tc)ggi(ga)(ta)icciga 6 Metallo Protease - antisense tt(ag)tgicciai(ct)tc(ag)tg 7 Specific Primers: Serine Protease (hepsin) = sense tgtcccgatggcgagtgttt 8 Serine Protease (hepsin) = antisense cctgttggccatagtactgc Serine Protease (SCCE) = sense agatgaatgagtacaccgtg 10 Serine Protease (SCCE) = antisense ccagtaagtccttgtaaacc 11 Serine Protease (Comp B) = sense aagggacacgagagctgtat 12 Serine Protease (Comp B) = antisense aagtggtagttggaggaagc 13 Serine Protease (Protease M) = sense ctgtgatccaccctgactat 20 Serine Protease (Protease M) = antisense caggtggatgtatgcacact 21 Serine Protease (TADG12) = sense (Ser10-s) gcgcactgtgtttatgagat 22 Serine Protease (TADG12) = antisense (Ser10-as) ctctttggcttgtacttgct 23 Serine Protease (TADG13) = sense tgagggacatcattatgcac 24 Serine Protease (TADG13) = antisense caagttttccccataattgg 25 Serine Protease (TADG14) = sense acagtacgcctgggagacca 26 Serine Protease (TADG14) = antisense ctgagacggtgcaattctgg 27 Cysteine Protease (Cath-L) = sense attggagagagaaaggctac 14 Cysteine Protease (Cath-L) = antisense cttgggattgtacttacagg 15 Metallo Protease (PUMP1) = sense cttccaaagtggtcacctac 16 Metallo Protease (PUMP1) = antisense ctagactgctaccatccgtc 17

EXAMPLE 2

Carcinoma Tissue

Several protease entities were identified and subcloned from PCR amplification of cDNA derived from serous cystadenocarcinomas. Therefore, the proteases described herein are reflective of surface activities for this type of carcinoma, the most common form of ovarian cancer. Applicant also shows PCR amplification bands of similar base pair size unique to the mucinous tumor type and the clear cell type. About 20-25% of ovarian cancers are classified as either mucinous, clear cell, or endometrioid.

EXAMPLE 3

Ligation, Transformation And Sequencing

To determine the identity of the PCR products, all the appropriate bands were ligated into Promega T-vector plasmid and the ligation product was used to transform JM109 cells (Promega) grown on selective media. After selection and culturing of individual colonies, plasmid DNA was isolated by means of the WIZARD MINIPREP™ DNA purification system (Promega). Inserts were sequenced using a Prism Ready Reaction Dydeoxy Terminators cycle sequencing kit (Applied Biosystems). Residual dye terminators were removed from the completed sequencing reaction using a CENTRISEP SPIN™ column (Princeton Separation), and samples were loaded into an Applied Biosystems Model 373A DNA sequencing system. The results of subcloning and sequencing for the serine protease primers are summarized in Table 3.

TABLE 3 Serine protease candidates Subclone Primer Set Gene Candidate 1 His-Ser Hepsin 2 His-Ser SCCE 3 His-Ser Compliment B 4 His-Asp Cofactor 1 5 His-Asp TADG-12* 6 His-Ser TADG-13* 7 His-Ser TADG-14* 8 His-Ser Protease M 9 His-Ser TADG-15* *indicates novel proteases

EXAMPLE 4

Cloning And Characterization

Cloning and characterization of new gene candidates was undertaken to expand the panel representative of extracellular proteases specific for ovarian carcinoma subtypes. Sequencing of the PCR products derived from tumor cDNA confirms the potential candidacy of these genes. The three novel genes all have conserved residues within the catalytic triad sequence consistent with their membership in the serine protease family.

Applicant compared the PCR products amplified from normal and carcinoma cDNAs using sense-histidine and antisense-aspartate as well as sense-histidine and antisense-serine. The anticipated PCR products of approximately 200 bp and 500 bp for those pairs of primers were observed (aspartate is approximately 50-70 amino acids downstream from histidine, and serine is about 100-150 amino acids toward the carboxy end from histidine).

FIG. 1 shows a comparison of PCR products derived from normal and carcinoma cDNA as shown by staining in an agarose gel. Two distinct bands in Lane 2 were present in the primer pair sense-His/antisense ASP (AS1) and multiple bands of about 500 bp are noted in the carcinoma lane for the sense-His/antisense-Ser (AS2) primer pairs in Lane 4.

EXAMPLE 5

Quantitative PCR

The mRNA overexpression of hepsin was detected and determined using quantitative PCR. Quantitative PCR was performed generally according to the method of Noonan et al. [Proc. Natl. Acad. Sci. USA, 87:7160-7164 (1990)]. The following oligonucleotide primers were used:

hepsin:

forward 5′-TGTCCCGATGGCGAGTGTTT-3′ (SEQ ID No. 8), and

reverse 5′-CCTGTTGGCCATAGTACTGC-3′ (SEQ ID No. 9); and β-tubulin;

forward 5′-TGCATTGACAACGAGGC-3′ (SEQ ID No. 18), and

reverse 5′-CTGTCTTGA CATTGTTG-3′ (SEQ ID No. 19).

β-tubulin was utilized as an internal control. The predicted sizes of the amplified genes were 282 bp for hepsin and 454 bp for β-tubulin. The primer sequences used in this study were designed according to the cDNA sequences described by Leytus et al. [Biochemistry, 27, 1067-1074 (1988)] for hepsin, and Hall et al. [Mol. Cell. Biol., 3, 854-862 (1983)] for β-tubulin. The PCR reaction mixture consisted of cDNA derived from 50 ng of mRNA converted by conventional techniques, 5 pmol of sense and antisense primers for both the hepsin gene and the β-tubulin gene, 200 μmol of dNTPs, 5 μCi of α-³²PdCTP and 0.25 units of Taq DNA polymerase with reaction buffer (Promega) in a final volume of 25 μl. The target sequences were amplified in parallel with the β-tubulin gene. Thirty cycles of PCR were carried out in a Thermal Cycler (Perkin-Elmer Cetus). Each cycle of PCR included 30 sec of denaturation at 95° C., 30 sec of annealing at 63° C. and 30 sec of extension at 72° C. The PCR products were separated on 2% agarose gels and the radioactivity of each PCR product was determined by using a Phosphorlmager™ (Molecular Dynamics). Student's t test was used for comparison of mean values.

Experiments comparing PCR amplification in normal ovary and ovarian carcinoma suggested overexpression and/or alteration in mRNA transcript in tumor tissues. Northern blot analysis of TADG-14 confirms a transcript size of 1.4 kb and data indicate overexpression in ovarian carcinoma (FIG. 2). Isolation and purification using both PCR and a specific 250 bp PCR product to screen positive plaques yielded a 1.2 kb clone of TADG-14. Other proteases were amplified by the same method using the appropriate primers from Table 2.

EXAMPLE 6

Tissue Bank

A tumor tissue bank of fresh frozen tissue of ovarian carcinomas as shown in Table 4 was used for evaluation. Approximately 100 normal ovaries removed for medical reasons other than malignancy were obtained from surgery and were available as controls.

TABLE 4 Ovarian cancer tissue bank Total Stage I/11 Stage III/IV No Stage Serous Malignant 166 15 140 8 LMP 16 9 7 0 Benign 12 0 0 12 Mucinous Malignant 26 6 14 6 LMP 28 25 3 0 Benign 3 0 0 3 Endometrioid Malignant 38 17 21 0 LMP 2 2 0 0 Benign 0 0 0 0 Other* Malignant 61 23 29 9 LMP 0 0 0 0 Benign 5 0 0 5 *Other category includes the following tumor types: Brenner's tumor, thecoma, teratoma, fibrothecoma, fibroma, granulosa cell, clear cell, germ cell, mixed mullerian, stromal, undifferentiated, and dysgerminoma.

From the tumor bank, approximately 100 carcinomas were evaluated encompassing most histological sub-types of ovarian carcinoma, including borderline or low-malignant potential tumors and overt carcinomas. The approach included using mRNA prepared from fresh frozen tissue (both normal and malignant) to compare expression of genes in normal, low malignant potential tumors and overt carcinomas. The cDNA prepared from polyA+mRNA was deemed to be genomic DNA-free by checking all preparations with primers that encompassed a known intron-exon splice site using both β-tubulin and p53 primers.

EXAMPLE 7

Northern Blots Analysis

Significant information can be obtained by examining the expression of these candidate genes by Northern blot. Analysis of normal adult multi-tissue blots offers the opportunity to identify normal tissues which may express the protease. Ultimately, if strategies for inhibition of proteases for therapeutic intervention are to be developed, it is essential to appreciate the expression of these genes in normal tissues.

Significant information is expected from Northern blot analysis of fetal tissue. Genes overexpressed in carcinomas are often highly expressed in organogenesis. As indicated, the hepsin gene cloned from hepatoma cells and overexpressed in ovarian carcinoma is overtly expressed in fetal liver. Hepsin gene expression was also detected in fetal kidney, and therefore, could be a candidate for expression in renal carcinomas.

Northern panels for examining expression of genes in a multi-tissue normal adult as well as fetal tissue are commercially available (CLONTECH). Such evaluation tools are not only important to confirm the overexpression of individual transcripts in tumor versus normal tissues, but also provides the opportunity to confirm transcript size, and to determine if alternate splicing or other transcript alteration may occur in ovarian carcinoma.

Northern blot analysis was performed as follows: 10 μg of mRNA was loaded onto a 1% formaldehyde-agarose gel, electrophoresed and blotted onto a HyBond-N⁺™ nylon membrane (Amersham). ³²P-labeled cDNA probes were made using Prime-a-Gene Labeling System™ (Promega). The PCR products amplified by specific primers were used as probes. Blots were prehybridized for 30 min and then hybridized for 60 min at 68° C. with ³²P-labeled cDNA probe in ExpressHyb™ Hybridization Solution (CLONTECH). Control hybridization to determine relative gel loading was accomplished using the β-tubulin probe.

Normal human tissues including spleen, thymus, prostate, testis, ovary, small intestine, colon, peripheral blood leukocyte, heart, brain, placenta, lung, liver, skeletal muscle, kidney, pancreas and normal human fetal tissues (Human Multiple Tissue Northern Blot; CLONTECH) were all examined using the same hybridization procedure.

EXAMPLE 8

PCR Products Corresponding To Serine, Cysteine And Metallo-Proteases

Based on their unique expression in either low malignant potential tumors or carcinomas, PCR-amplified cDNA products were cloned and sequenced and the appropriate gene identified based upon nucleotide and amino acid sequences stored in the GCG and EST databases. FIGS. 3, 4 & 5 show the PCR product displays comparing normal and carcinomatous tissues using redundant primers for serine proteases (FIG. 3), for cysteine proteases (FIG. 4) and for metallo-proteases (FIG. 5). Note the differential expression in the carcinoma tissues versus the normal tissues. The proteases were identified using redundant cDNA primers (see Table 2) directed towards conserved sequences that are associated with intrinsic enzyme activity (for serine proteases, cysteine proteases and metallo-proteases) by comparing mRNA expression in normal, low malignant potential and overt ovarian carcinoma tissues according to Sakanari et al. [Biochemistry 86, 4863-4867 (1989)].

EXAMPLE 9

Serine Proteases

For the serine protease group, using the histidine domain primer sense, S1, in combination with antisense primer AS2, the following proteases were identified:

(a) Hepsin, a trypsin-like serine protease cloned from hepatoma cells shown to be a cell surface protease essential for the growth of hepatoma cells in culture and highly expressed in hepatoma tumor cells (FIG. 3, Lane 4);

(b) Complement factor B protease (human factor IX), a protease involved in the coagulation cascade and associated with the production and accumulation of fibrin split products associated with tumor cells (FIG. 3, Lane 4). Compliment factor B belongs in the family of coagulation factors X (Christmas factor). As part of the intrinsic pathway, compliment factor B catalyzes the proteolytic activation of coagulation factor X in the presence of Ca²⁺phospholipid and factor VIIIa e5; and

(c) A stratum corneum chymotryptic enzyme (SCCE) serine protease involved in desquarnation of skin cells from the human stratum corneum (FIG. 3, Lane 4). SCCE is expressed in keratinocytes of the epidermis and functions to degrade the cohesive structures in the cornified layer to allow continuous skin surface shedding.

EXAMPLE 10

Cysteine Proteases

In the cysteine protease group, using redundant sense and anti-sense primers for cysteine proteases, one unique PCR product was identified by overexpression in ovarian carcinoma when compared to normal ovarian tissue (FIG. 4, Lanes 3-5). Cloning and sequencing this PCR product identified a sequence of Cathepsin L, which is a lysomal cysteine protease whose expression and secretion is induced by malignant transformation, growth factors and tumor promoters. Many human tumors (including ovarian) express high levels of Cathepsin L. Cathepsin L cysteine protease belongs in the stromolysin family and has potent elastase and collagenase activities. Published data indicates increased levels in the serum of patients with mucinous cystadenocarcinoma of the ovary. It has not heretofore been shown to be expressed in other ovarian tumors.

EXAMPLE 11

Metallo-Proteases

Using redundant sense and anti-sense primers for the metallo-protease group, one unique PCR product was detected in the tumor tissue which was absent in normal ovarian tissue (FIG. 5, Lanes 2-5). Subcloning and sequencing this product indicates it has complete homology in the appropriate region with the so-called PUMP-1 (MMP-7) gene. This zinc-binding metallo-protease is expressed as a proenzyme with a signal sequence and is active in gelatin and collagenase digestion. PUMP-1 has also been shown to be induced and overexpressed in 9 of 10 colorectal carcinomas compared to normal colon tissue, suggesting a role for this substrate in the progression of this disease.

EXAMPLE 12

Expression Of Hepsin

The expression of the serine protease hepsin gene in 8 normal, 11 low malignant potential tumors, and 14 carcinoma (both mucinous and serous type) by quantitative PCR using hepsin-specific primers (see Table 2) was determined (primers directed toward the β-tubulin message were used as an internal standard) (Table 5). These data confirm the overexpression of the hepsin surface protease gene in ovarian carcinoma, including both low malignant potential tumors and overt carcinoma. Expression of hepsin is increased over normal levels in low malignant potential tumors, and high stage tumors (Stage III) of this group have higher expression of hepsin when compared to low stage tumors (Stage 1) (Table 6). In overt carcinoma, serous tumors exhibit the highest levels of hepsin expression, while mucinous tumors express levels of hepsin comparable with the high stage low malignant potential group (FIGS. 6 & 7).

TABLE 5 Patient Characteristics and Expression of Hepsin Gene mRNA expression of Case Histological type^(a) Stage/Grade LN^(b) hepsin^(c) 1 normal ovary n 2 normal ovary n 3 normal ovary n 4 normal ovary n 5 normal ovary n 6 normal ovary n 7 normal ovary n 8 normal ovary n 9 normal ovary n 10 normal ovary n 11 S adenoma (LMP) 1/1 N 4+ 12 S adenoma (LMP) 1/1 NE 4+ 13 S adenoma (LMP) 1/1 NE n 14 S adenoma (LMP) 1/1 N 2+ 15 S adenoma (LMP) 3/1 P 4+ 16 S adenoma (LMP) 3/1 P 4+ 17 S adenoma (LMP) 3/1 P 4+ 18 M adenoma (LMP) 1/1 NE 4+ 19 M adenoma (LMP) 1/1 N n 20 M adenoma (LMP) 1/1 N n 21 M adenoma (LMP) 1/1 N n 22 M adenoma (LMP) 1/1 NE n 23 S carcinoma 1/2 N 4+ 24 S carcinoma 1/3 N 4+ 25 S carcinoma 3/1 NE 2+ 26 S carcinoma 3/2 NE 4+ 27 S carcinoma 3/2 P 4+ 28 S carcinoma 3/2 NE 2+ 29 S carcinoma 3/3 NE 2+ 30 S carcinoma 3/3 NE 4+ 31 S carcinoma 3/3 NE 4+ 32 S carcinoma 3/3 NE 4+ 33 S carcinoma 3/3 N 4+ 34 S carcinoma 3/3 NE n 35 S carcinoma 3/3 NE 4+ 36 S carcinoma 3/3 NE 4+ 37 S carcinoma 3/3 NE 4+ 38 S carcinoma 3/3 N 4+ 39 S carcinoma 3/2 NE 2+ 40 S carcinoma 3/3 NE 4+ 41 S carcinoma 3/2 NE 4+ 42 M carcinoma 1/2 N n 43 M carcinoma 2/2 NE 4+ 44 M carcinoma 2/2 N 4+ 45 M carcinoma 3/1 NE n 46 M carcinoma 3/2 NE 4+ 47 M carcinoma 3/2 NE n 48 M carcinoma 3/3 NE n 49 E carcinoma 2/3 N 4+ 50 E carcinoma 3/2 NE 4+ 51 E carcinoma 3/3 NE 4+ 52 C carcinoma 1/3 N 4+ 53 C carcinoma 1/1 N 4+ 54 C carcinoma 3/2 P 4+ ^(a)S, serous; M, mucinous; E, endometrioid; C, clear cell; ^(b)LN, lymph node metastasis; P, positive; N, negative; NE, not examined; ^(c)n, normal range = mean ± 2SD; 2+, mean ± 2SD to ± 4SD; 4+, mean ± 4SD or greater.

TABLE 6 Overexpression of hepsin in normal ovaries and ovarian tumors Ratio of Hepsin Hepsin Type N Overexpression to β-tubulin Normal 10  0 (0%) 0.06 ± 0.05 LMP 12  7 (58.3%) 0.26 ± 0.19 Serous 7  6 (85.7%) 0.34 ± 0.20 Mucinous 5  1 (20.0%) 0.14 ± 0.12 Carcinomous 32 27 (84.4%) 0.46 ± 0.29 Serous 19 18 (94.7%) 0.56 ± 0.32 Mucinous 7  3 (42.9%) 0.26 ± 0.22 Endometrioid 3  3 (100%) 0.34 ± 0.01 Clear Cell 3  3 (100%) 0.45 ± 0.08

EXAMPLE 13

Expression of SCCE and PUMP-1

Studies using both SCCE-specific primers (FIG. 8) and PUMP-specific primers (FIG. 9) indicate overexpression of these proteases in ovarian carcinomas.

EXAMPLE 14

Summary Of Proteases Detected Herein

Most of the proteases described herein were identified from the sense-His/antisense-Ser primer pair, yielding a 500 bp PCR product (FIG. 1, Lane 4). Some of the enzymes are familiar, a short summary of each follows.

Hepsin

Hepsin is a trypsin-like serine protease cloned from hepatoma cells. Hepsin is an extracellular protease (the enzyme includes a secretion signal sequence) which is anchored in the plasma membrane by its amino terminal domain, thereby exposing its catalytic domain to the extracellular matrix. Hepsin has also been shown to be expressed in breast cancer cell lines and peripheral nerve cells. Hepsin has never before been associated with ovarian carcinoma. Specific primers for the hepsin gene were synthesized and the expression of hepsin examined using Northern blots of fetal tissue and ovarian tissue (both normal and ovarian carcinoma).

FIG. 10A shows that hepsin was expressed in ovarian carcinomas of different histologic types, but not in normal ovary. FIG. 10B shows that hepsin was expressed in fetal liver and fetal kidney as anticipated, but at very low levels or not at all in fetal brain and lung. FIG. 10C shows that hepsin overexpression is not observed in normal adult tissue. Slight expression above the background level is observed in the adult prostate. The mRNA identified in both Northern blots was the appropriate size for the hepsin transcript. The expression of hepsin was examined in 10 normal ovaries and 44 ovarian tumors using specific primers to β-tubulin and hepsin in a quantitative PCR assay, and found it to be linear over 35 cycles. Expression is presented as the ratio of ³²p-hepsin band to the internal control, the ³²P-β-tubulin band.

Hepsin expression was investigated in normal (N), mucinous (M) and serous (S) low malignant potential (LMP) tumors and carcinomas (CA). FIG. 11A shows quantitative PCR of hepsin and internal control β-tubulin. FIG. 11B shows the ratio of hepsin:β-tubulin expression in normal ovary, LMP tumor, and ovarian carcinoma. It was observed that Hepsin mRNA expression levels were significantly elevated in LMP tumors, (p<0.005) and carcinomas (p<0.0001) compared to levels in normal ovary. All 10 cases of normal ovaries showed a relatively low level of hepsin mRNA expression.

Hepsin mRNA is highly overexpressed in most histopathologic types of ovarian carcinomas including some low malignant potential tumors (see FIGS. 11A & 11B). Most noticeably, hepsin is highly expressed in serous, endometrioid and clear cell tumors tested. It is highly expressed in some mucinous tumors, but it is not overexpressed in the majority of such tumors.

Stratum Corneum Chymotrypsin Enzyme (SCCE)

The PCR product identified was the catalytic domain of the sense-His/antisense-Ser of the stratum corneum chymotrypsin enzyme. This extracellular protease was cloned, sequenced and shown to be expressed on the surface of keratinocytes in the epidermis. Stratum corneum chymotrypsin enzyme is a chymotrypsin-like serine protease whose function is suggested to be in the catalytic degradation of intercellular cohesive structures in the stratum corneum layer of the skin. This degradation allows continuous shedding (desquamation) of cells from the skin surface. The subcellular localization of stratum corneum chymotrypsin enzyme is in the upper granular layer in the stratum corneum of normal non-palmoplantar skin and in the cohesive parts of hypertrophic plantar stratum corneum. Stratum corneum chymotrypsin enzyme is exclusively associated with the stratum corneum and has not so far been shown to be expressed in any carcinomatous tissues.

Northern blots were probed with the PCR product to determine expression of stratum corneum chymotrypsin enzyme in fetal tissue and ovarian carcinoma (FIGS. 12A & 12B). Noticeably, detection of stratum corneum chymotrypsin enzyme messenger RNA on the fetal Northern was almost non-existent (a problem with the probe or the blot was excluded by performing the proper controls). A faint band appeared in fetal kidney. On the other hand, stratum corneum chymotrypsin enzyme mRNA is abundant in the ovarian carcinoma mRNA (FIG. 12B). Two transcripts of the correct size are observed for stratum corneum chymotrypsin enzyme. The same panel of cDNA used for hepsin analysis was used for stratum corneum chymotrypsin enzyme expression.

No stratum corneum chymotrypsin enzyme expression was detected in the normal ovary lane of the Northern blot. A comparison of all candidate genes, including a loading marker (β-tubulin), was shown to confirm that this observation was not a result of a loading bias. Quantitative PCR using stratum corneum chymotrypsin enzyme primers, along with β-tubulin internal control primers, confirmed the overexpression of stratum corneum chymotrypsin enzyme mRNA in carcinoma of the ovary with no expression in normal ovarian tissue (FIG. 13).

FIG. 13A shows a comparison using quantitative PCR of stratum corneum chymotrypsin enzyme cDNA from normal ovary and ovarian carcinomas. FIG. 13B shows the ratio of stratum corneum chymotrypsin enzyme to the β-tubulin internal standard in 10 normal and 44 ovarian carcinoma tissues. Again, it is observed that stratum corneum chymotrypsin enzyme is highly overexpressed in ovarian carcinoma cells. It is also noted that some mucinous tumors overexpress stratum corneum chymotrypsin enzyme, but the majority do not.

Protease M

Protease M was identified from subclones of the His—ser primer pair. This protease was first cloned by Anisowicz, et al., [Molecular Medicine, 2, 624-636 (1996)] and shown to be overexpressed in carcinomas. A preliminary evaluation indicates that this enzyme is overexpressed in ovarian carcinoma (FIG. 14).

Cofactor I and Complement Factor B

Several serine proteases associated with the coagulation pathway were also subcloned. Examination of normal and ovarian carcinomas by quantitative PCR for expression of these enzymes, it was noticeable that this mRNA was not clearly overexpressed in ovarian carcinomas when compared to normal ovarian tissue. It should be noted that the same panel of tumors was used for the evaluation of each candidate protease.

EXAMPLE 15

Summary Of Previously Unknown Proteases Detected Herein TADG-12

TADG-12 was identified from the primer pairs, sense-His/antisense-Asp (see FIG. 1, Lanes 1 & 2). Upon subcloning both PCR products in lane 2, the 200 bp product had a unique protease-like sequence not included in GenBank. This 200 bp product contains many of the conserved amino acids common for the His-Asp domain of the family of serine proteins. The second and larger PCR product (300 bp) was shown to have a high degree of homology with TADG-12 (His-Asp sequence), but also contained approximately 100 bp of unique sequence. Synthesis of specific primers and the sequencing of the subsequent PCR products from three different tumors demonstrated that the larger PCR product (present in about 50% of ovarian carcinomas) includes an insert of about 100 bp near the 5′ end (and near the histidine) of the sequence. This insert may be a retained genomic intron because of the appropriate position of splice sites and the fact that the insert does not contain an open reading frame (see FIG. 15). This suggests the possibility of a splice site mutation which gives rise to retention of the intron, or a translocation of a sequence into the TADG-12 gene in as many as half of all ovarian carcinomas.

TADG-13 and TADG-14

Specific primers were synthesized for TADG-13 and TADG-14 to evaluate expression of genes in normal and ovarian carcinoma tissue. Northern blot analysis of ovarian tissues indicates the transcript for the TADG-14 gene is approximately 1.4 kb and is expressed in ovarian carcinoma tissues (FIG. 16A) with no noticeable transcript presence in normal tissue. In quantitative PCR studies using specific primers, increased expression of TADG-14 in ovarian carcinoma tissues was noted compared to a normal ovary (FIG. 16B). The presence of a specific PCR product for TADG-14 in both an HeLa library and an ovarian carcinoma library was also confirmed. Several candidate sequences corresponding to TADG-14 have been screened and isolated from the HeLa library.

Clearly from sequence homology, these genes fit into the family of serine proteases. TADG-13 and -14 are, however, heretofore undocumented genes which the specific primers of the invention allow to be evaluated in normal and tumor cells, and with which the presence or absence of expression of these genes is useful in the diagnosis or treatment selection for specific tumor types.

PUMP-1

In a similar strategy using redundant primers to metal binding domains and conserved histidine domains, a differentially expressed PCR product identical to matrix metallo-protease 7 (MMP-7) was identified, herein called PUMP-1. Using specific primers for PUMP-1, PCR produced a 250 bp product for Northern blot analysis.

PUMP-1 is differentially expressed in fetal lung and kidney tissues. FIG. 17A shows the expression of PUMP-1 in human fetal tissue, while no transcript could be detected in either fetal brain or fetal liver. FIG. 17B compares PUMP-1 expression in normal ovary and carcinoma subtypes using Northern blot analysis. Notably, PUMP-1 is expressed in ovarian carcinoma tissues, and again, the presence of a transcript in normal tissue was not detected. Quantitative PCR comparing normal versus ovarian carcinoma expression of the PUMP-1 mRNA indicates that this gene is highly expressed in serous carcinomas, including most low malignant serous tumors, and is, again, expressed to a lesser extent in mucinous tumors (see FIGS. 18A & 18B). PUMP-1, however, is so far the protease most frequently found overexpressed in mucinous tumors (See Table 7).

Cathepsin-L

Using redundant cysteine protease primers to conserved domains surrounding individual cysteine and histidine residues, the cathepsin-L protease was identified in several serous carcinomas. An initial examination of the expression of cathepsin L in normal and ovarian tumor tissue indicates that transcripts for the cathepsin-L protease are present in both normal and tumor tissues (FIG. 19). However, its presence or absence in combination with other proteases of the present invention permits identification of specific tumor types and treatment choices.

Discussion

Redundant primers to conserved domains of serine, metallo-, and cysteine proteases have yielded a set of genes whose mRNAs are overexpressed in ovarian carcinoma. The genes which are clearly overexpressed include the serine proteases hepsin, stratum corneum chymotrypsin enzyme, protease M TADG12, TADG14 and the metallo-protease PUMP-1 (see FIG. 19 and Table 7). Northern blot analysis of normal and ovarian carcinoma tissues, summarized in FIG. 14, indicated overexpression of hepsin, stratum corneum chymotrypsin enzyme, PUMP-1 and TADG-14. A β-tubulin probe to control for loading levels was included.

TABLE 7 Overexpression of Proteases in Ovarian Tumors Type N Hepsin SCCE Pump-1 Protease M Normal 10 0% (0/10) 0% (0/10) 0% (0/10) 0% (0/10) LMP 12 58.3% (7/12) 66.7% (8/12) 75.0% (9/12) 75% (9/12) serous 7 85.7% (6/7) 85.7% (6/7) 85.7% (6/7) 100% (7/7) mucinous 5 20.0% (1/5) 40.0% (2/5) 60% (3/5) 40.0% (2/5) Carcinoma 32 84.4% (27/32) 78.1% (25/32) 81.3% (26/32) 90.6% (29/32) serous 19 94.7% (18/19) 89.5% (17/19) 78.9% (15/19) 94.7% (18/19) mucinous 7 42.9% (3/7) 28.6% (2/7) 71.4% (5/7) 85.7% (6/7) endometr. 3 100% (3/3) 100% (3/3) 100% (3/3) 100% (3/3) clear cell 3 100% (3/3) 100% (3/3) 100% (3/3) 67.7% (2/3)

For the most part, these proteins previously have not been associated with the extracellular matrix of ovarian carcinoma cells. No panel of proteases which might contribute to the growth, shedding, invasion and colony development of metastatic carcinoma has been previously described, including the three new candidate serine proteases which are herein disclosed. The establishment of an extracellular protease panel associated with either malignant growth or malignant potential offers the opportunity for the identification of diagnostic or prognostic markers and for therapeutic intervention through inhibition or down regulation of these proteases.

The availability of the instant gene-specific primers coding for the appropriate region of tumor specific proteases allows for the amplification of a specific cDNA probe using Northern and Southern analysis, and their use as markers to detect the presence of the cancer in tissue. The probes also allow more extensive evaluation of the expression of the gene in normal ovary versus low malignant potential tumor, as well as both high- and low-stage carcinomas. The evaluation of a panel of fresh frozen tissue from all the carcinoma subtypes (Table 4) allowed the determination of whether a protease is expressed predominantly in early stage disease or within specific carcinoma subtypes. It was also determined whether each gene's expression is confined to a particular stage in tumor progression and/or is associated with metastatic lesions. Detection of specific combinations of proteases is an identifying characteristic of the specific tumor types and yields valuable information for diagnoses and treatment selection. Particular tumor types may be more accurately diagnosed by the characteristic expression pattern of each specific tumor.

EXAMPLE 16

Hepsin Peptide Ranking

For vaccine or immune stimulation, individual 9-mers to 11-mers of the hepsin protein were examined to rank the binding of individual peptides to the top 8 haplotypes in the general population (Parker et al., (1994)). The computer program used for this analyses can be found on the web site of National Institutes of Health. Table 8 shows the peptide ranking based upon the predicted half-life of each peptide's binding to a particular HLA allele. A larger half-life indicates a stronger association with that peptide and the particular HLA molecule. The hepsin peptides that strongly bind to an HLA allele are putative immunogens, and are used to innoculate an individual against hepsin.

TABLE 8 Hepsin peptide ranking HLA Type Predicted SEQ & Ranking Start Peptide Dissociation_(½) ID No. HLA A0201  1 170 SLGRWPWQV 521.640 28  2 191 SLLSGDWVL 243.051 29  3 229 GLQLGVQAV 159.970 30  4 392 KVSDFREWI 134.154 31  5 308 VLQEARVPI 72.717 32  6 130 RLLEVISVC 71.069 33  7 98 ALTHSELDV 69.552 34  8 211 VLSRWRVFA 46.451 35  9 26 LLLLTAIGA 31.249 36 10 284 ALVDGKICT 30.553 37 11 145 FLAAICQDC 22.853 38 12 192 LLSGDWVLT 21.536 39 13 20 ALTAGTLLL 21.362 40 14 259 ALVHLSSPL 21.362 41 15 277 CLPAAGQAL 21.362 42 16 230 LQLGVQAVV 18.186 43 17 268 PLTEYIQPV 14.429 44 18 31 AIGAASWAI 10.759 45 19 285 LVDGKICTV 9.518 46 20 27 LLLTAIGAA 9.343 47 HLA A0205  1 191 SLLSGDWVL 25.200 48  2 163 IVGGRDTSL 23.800 49  3 392 KVSDFREWI 18.000 50  4 64 MVFDKTEGT 15.300 51  5 236 AVVYHGGYL 14.000 52  6 55 QVSSADARL 14.000 53  7 130 RLLEVISVC 9.000 54  8 230 LQLGVQAVV 8.160 55  9 20 ALTAGTLLL 7.000 56 10 259 ALVHLSSPL 7.000 57 11 277 CLPAAGQAL 7.000 58 12 17 KVAALTAGT 6.000 59 13 285 LVDGKICTV 5.440 60 14 308 VLQEARVPI 5.100 61 15 27 LLLTAIGAA 5.100 62 16 229 GLQLGVQAV 4.000 63 17 313 RVPIISNDV 4.000 64 18 88 LSCEEMGFL 3.570 65 19 192 LLSGDWVLT 3.400 66 20 284 ALVDGKICT 3.000 67 HLA A1  1 89 SCEEMGFLR 45.000 68  2 58 SADARLMVF 25.000 69  3 393 VSDFREWIF 7.500 70  4 407 HSEASGMVT 6.750 71  5 137 VCDCPRGRF 5.000 72  6 269 LTEYIQPVC 4.500 73  7 47 DQEPLYPVQ 2.700 74  8 119 CVDEGRLPH 2.500 75  9 68 KTEGTWRLL 2.250 76 10 101 HSELDVRTA 1.350 77 11 250 NSEENSNDI 1.350 78 12 293 VTGWGNTQY 1.250 79 13 231 QLGVQAVVY 1.000 80 14 103 ELDVRTAGA 1.000 81 15 378 GTGCALAQK 1.000 82 16 358 VCEDSISRT 0.900 83 17 264 SSPLPLTEY 0.750 84 18 87 GLSCEEMGF 0.500 85 19 272 YIQPVCLPA 0.500 86 20 345 GIDACQGDS 0.500 87 HLA A24  1 301 YYGQQAGVL 200.000 88  2 238 VYHGGYLPF 100.000 89  3 204 CFPERNRVL 36.000 90  4 117 FFCVDEGRL 20.000 91  5 124 RLPHTQRLL 12.000 92  6 80 RSNARVAGL 12.000 93  7 68 KTEGTWRLL 12.000 94  8 340 GYPEGGIDA 9.000 95  9 242 GYLPFRDPN 9.000 96 10 51 LYPVQVSSA 7.500 97 11 259 ALVHLSSPL 7.200 98 12 277 CLPAAGQAL 7.200 99 13 191 SLLSGDWVL 6.000 100 14 210 RVLSRWRVF 6.000 101 15 222 VAQASPHGL 6.000 102 16 236 AVVYHGGYL 6.000 103 17 19 AALTAGTLL 6.000 104 18 36 SWAIVAVLL 5.600 105 19 35 ASWAIVAVL 5.600 106 20 300 QYYGQQAGV 5.600 107 HLA B7  1 363 ISRTPRWRL 90.000 108  2 366 TPRWRLCGI 80.000 109  3 236 AVVYHGGYL 60.000 110  4 13 CSRPKVAAL 40.000 111  5 179 SLRYDGAHL 40.000 112  6 43 LLRSDQEPL 40.000 113  7 19 AALTAGTLL 36.000 114  8 55 QVSSADARL 20.000 115  9 163 IVGGRDTSL 20.000 116 10 140 CPRGRFLAA 20.000 117 11 20 ALTAGTLLL 12.000 118 12 409 EASGMVTQL 12.000 119 13 259 ALVHLSSPL 12.000 120 14 35 ASWAIVAVL 12.000 121 15 184 GAHLCGGSL 12.000 122 16 18 VAALTAGTL 12.000 123 17 222 VAQASPHGL 12.000 124 18 224 QASPHGLQL 12.000 125 19 265 SPLPLTEYI 8.000 126 20 355 GPFVCEDSI 8.00 127 HLA B8  1 13 CSRPKVAAL 80.000 128  2 366 TPRWRLCGI 80.000 129  3 140 CPRGRFLAA 16.000 130  4 152 DCGRRKLPV 4.800 131  5 363 ISRTPRWRL 4.000 132  6 163 IVGGRDTSL 4.000 133  7 331 QIKPKMFCA 4.000 134  8 80 RSNARVAGL 2.000 135  9 179 SLRYDGAHL 1.600 136 10 43 LLRSDQEPL 1.600 137 11 409 EASGMVTQL 1.600 138 12 311 EARVPIISN 0.800 139 13 222 VAQASPHGL 0.800 140 14 19 AALTAGTLL 0.800 141 15 18 VAALTAGTL 0.800 142 16 184 GAHLCGGSL 0.800 143 17 224 QASPHGLQL 0.800 144 18 82 NARVAGLSC 0.800 145 19 204 CFPERNRVL 0.600 146 20 212 LSRWRVFAG 0.400 147 HLA B2702  1 172 GRWPWQVSL 300.000 148  2 44 LRSDQEPLY 200.00 149  3 155 RRKLPVDRI 180.000 150  4 213 SRWRVFAGA 100.000 151  5 166 GRDTSLGRW 100.000 152  6 369 WRLCGIVSW 100.000 153  7 180 LRYDGAHLC 100.000 154  8 96 LRALTHSEL 60.000 155  9 396 FREWIFQAI 60.000 156 10 123 GRLPHTQRL 60.000 157 11 207 ERNRVLSRW 30.000 158 12 209 NRVLSRWRV 20.000 159 13 14 SRPKVAALT 20.000 160 14 106 VRTAGANGT 20.000 161 15 129 QRLLEVISV 20.000 162 16 349 CQGDSGGPF 20.000 163 17 61 ARLMVFDKT 20.000 164 18 215 WRVFAGAVA 20.000 165 19 143 GRFLAAICQ 10.000 166 20 246 FRDPNSEEN 10.000 167 HLA B4403  1 132 LEVISVCDC 36.000 168  2 91 EEMGFLRAL 18.000 169  3 264 SSPLPLTEY 13.500 170  4 310 QEARVPIIS 12.000 171  5 319 NDVCNGADF 10.000 172  6 4 KEGGRTVPC 9.000 173  7 251 SEENSNDIA 8.000 174  8 256 NDIALVHLS 7.500 175  9 294 TGWGNTQYY 6.750 176 10 361 DSISRTPRW 6.750 177 11 235 QAVVYHGGY 6.000 178 12 109 AGANGTSGF 6.000 179 13 270 TEYIQPVCL 6.000 180 14 174 WPWQVSLRY 4.500 181 15 293 VTGWGNTQY 4.500 182 16 69 TEGTWRLLC 4.000 183 17 90 CEEMGFLRA 4.000 184 18 252 EENSNDIAL 4.000 185 19 48 QEPLYPVQV 4.000 186 20 102 SELDVRTAG 3.600 187

EXAMPLE 17

Hepsin Peptides as Target Epitopes For Human CD8⁺Cytotoxic T Cells

Two computer programs were used to identify 9-mer peptides containing binding motifs for HLA class I molecules. The first, based on a scheme devised by Parker et al (1994), was developed by the Bioinformatics and Molecular Analysis Section (BIMAS) of the Center for Information Technology, NIH, and the second, known as SYFPEITHI, was formulated by Rammensee and colleagues at the University of Tubingen, Germany.

Peptides that possessed HLA A2.1 binding motifs were synthesized and tested directly for their ability to bind HLA A2.1. This technique employs T2 cells which are peptide transporter-deficient and thus express low endogenous HLA class I levels due to inability to load peptide and stabilize HLA class I folding for surface expression. It has been showed that addition of exogenous peptides capable of binding HLA A2.1 (A*0201) could increase the number of properly folded HLA A2.1 molecules on the cell surface, as revealed by flow cytometry (Nijman et al, 1993).

Peptides that possessed binding motifs for HLA class I molecules other than A2.1 were tested directly for their ability to induce specific CD8⁺CTL responses from normal adult donors as described below.

Monocyte-derived dendritic cells were generated from peripheral blood drawn from normal adult donors of the appropriate HLA type. Adherent monocytes were cultured in AIM-V (Gibco-BRL) supplemented with GM-CSF and IL-4 according to standard techniques (Santin et al, 2000, 2001). After 5-6 days, dendritic cell maturation was induced by addition of PGE₂, IL-1β and TNFα for a further 48 h.

Mature dendritic cells were loaded with peptide (2×10⁶ dendritic cells with 50 μg/ml peptide in 1 ml serum-free AIM-V medium for 2 h at 37° C.) and washed once prior to culture with 1×10⁶/ml peripheral blood mononuclear cells (PBMC) in AIM-V or AIM-V plus 5% human AB serum. The PBMC:DC ratio was between 20:1 and 30:1. After 7 days, responder T cells were restimulated with peptide-loaded, irradiated autologous dendritic cells or peripheral blood mononuclear cells at responder:stimulator ratios between 10:1 and 20:1 or 1:1 and 1:10 respectively. At this point, cultures were supplemented with recombinant human IL-2 (10-100 U/ml), and fed with 50-75% changes of fresh medium plus IL-2 every 2-4 days. T cell lines were established and maintained by peptide restimulation every 14-21 days. Responder CD8⁺T cells were purified by positive selection with anti-CD8-coupled magnetic beads (Dynal, Inc.) after the 2^(nd) or 3^(rd) antigen stimulation.

Peptide-specific cytotoxicity was tested in standard 5-6 h microwell ⁵¹Cr-release assays (Nazaruk et al, 1998). Autologous EBV-transformed lymphoblastoid cell lines (LCL) were loaded with peptide (50 μg/ml, 1 h at 37° C.) and subsequently ⁵¹Cr-labeled (50 μCi in 200-300 μl, 1 h at 37° C.). Peptide-loaded ⁵¹Cr-labeled LCL were incubated with CD8⁺T cells at effector-target ration between 5:1 and 1.25:1. Cytotoxicity was recorded as percentage ⁵¹Cr released into culture supernatants.

Hepsin peptide 170-178 (SEQ ID No. 28) is an HLA A2.1-binding peptide, as revealed by upregulation of A2.1 expression in T2 cells (data not shown). CD8⁺CTL specific for hepsin 170-178 killed peptide-loaded autologous lymphoblastoid cell lines, but did not kill control, peptide-free lymphoblastoid cell lines (FIG. 20). Heterologous HLA A2.1-expressing peptide-loaded lymphoblastoid cell lines were efficiently killed, but targets lacking HLA A2.1 were not killed. Natural killer-sensitive K562 cells were not lysed. Cytotoxicity against hepsin 170-178 loaded lymphoblastoid cell lines could be blocked with a monoclonal antibody specific for a non-polymorphic HLA class I determinant, confirming that lysis was HLA class I-restricted. Cytotoxicity was also blocked by MAb specific for HLA A2.1.

Hepsin peptide 172-180 (SEQ ID No. 148) was predicted by computer analysis to bind HLA B27. While this could not be demonstrated directly, cytotoxicity assays showed that CD8⁺CIL specific for hepsin 172-180 could kill peptide-loaded, HLA B27-expressing autologous and heterologous lymphoblastoid cell lines, but failed to recognize heterologous peptide-loaded lymphoblastoid cell lines that did not express HLA B27.

CD8⁺CTL specific for hepsin 172-180 killed peptide-loaded autologous lymphoblastoid cell lines, but did not kill peptide-free control lymphoblastoid cell lines (FIG. 21). Natural killer-sensitive K562 cells were not lysed. Cytotoxicity against hepsin 172-180 loaded lymphoblastoid cell lines could be blocked with MAb specific for a non-polymorphic HLA class I determinant, confirming that lysis was HLA class I-restricted.

Any patents or publications mentioned in this specification are indicative of the levels of those skilled in the art to which the invention pertains. Further, these patents and publications are incorporated by reference herein to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference.

One skilled in the art will appreciate readily that the present invention is well adapted to carry out the objects and obtain the ends and advantages mentioned, as well as those objects, ends and advantages inherent herein. The present examples, along with the methods, procedures, treatments, molecules, and specific compounds described herein are presently representative of preferred embodiments, are exemplary, and are not intended as limitations on the scope of the invention. Changes therein and other uses will occur to those skilled in the art which are encompassed within the spirit of the invention as defined by the scope of the claims.

                   #             SEQUENCE LISTING <160> NUMBER OF SEQ ID NOS: 188 <210> SEQ ID NO 1 <211> LENGTH: 23 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <221> NAME/KEY: primer_bind <222> LOCATION: 6, 9, 12, 15, 18 <223> OTHER INFORMATION: sense oligonucleotide primer # for amplifying       serine proteases, n = Inosine <400> SEQUENCE: 1 tgggtngtna cngcngcnca ytg            #                   #                23 <210> SEQ ID NO 2 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <221> NAME/KEY: primer_bind <222> LOCATION: 3, 6, 9, 12, 15, 18 <223> OTHER INFORMATION: antisense oligonucleotide pr #imer for amplifying       serine proteases, n = Inosine <400> SEQUENCE: 2 arnarngcna tntcnttncc             #                   #                   # 20 <210> SEQ ID NO 3 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <221> NAME/KEY: primer_bind <222> LOCATION: 3, 6, 9, 12, 18 <223> OTHER INFORMATION: antisense oligonucleotide pr #imer for amplifying       serine proteases, n = Inosine <400> SEQUENCE: 3 arnggnccnc cnswrtcncc             #                   #                   # 20 <210> SEQ ID NO 4 <211> LENGTH: 24 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <221> NAME/KEY: primer_bind <222> LOCATION: 6, 15, 18 <223> OTHER INFORMATION: sense oligonucleotide primer # for amplifying       cysteine proteases, n = Inosine <400> SEQUENCE: 4 carggncart gyggnwsntg ytgg           #                   #                24 <210> SEQ ID NO 5 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <221> NAME/KEY: primer_bind <222> LOCATION: 3, 6, 15 <223> OTHER INFORMATION: antisense oligonucleotide pr #imer for amplifying       cysteine proteases, n = Inosine <400> SEQUENCE: 5 tanccnccrt trcanccytc             #                   #                   # 20 <210> SEQ ID NO 6 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <221> NAME/KEY: primer_bind <222> LOCATION: 3, 6, 12, 15, 18 <223> OTHER INFORMATION: sense oligonucleotide primer # for amplifying       metallo-proteases, n = Inosine <400> SEQUENCE: 6 ccnmgntgyg gnrwnccnga             #                   #                   # 20 <210> SEQ ID NO 7 <211> LENGTH: 17 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <221> NAME/KEY: primer_bind <222> LOCATION: 6, 9, 11 <223> OTHER INFORMATION: antisense oligonucleotide pr #imer for amplifying       metallo-proteases, n = Inosine <400> SEQUENCE: 7 ttrtgnccna nytcrtg              #                   #                   #   17 <210> SEQ ID NO 8 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for       hepsin <400> SEQUENCE: 8 tgtcccgatg gcgagtgttt             #                   #                   # 20 <210> SEQ ID NO 9 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       hepsin <400> SEQUENCE: 9 cctgttggcc atagtactgc             #                   #                   # 20 <210> SEQ ID NO 10 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for SCCE <400> SEQUENCE: 10 agatgaatga gtacaccgtg             #                   #                   # 20 <210> SEQ ID NO 11 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       SCCE <400> SEQUENCE: 11 ccagtaagtc cttgtaaacc             #                   #                   # 20 <210> SEQ ID NO 12 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for CompB <400> SEQUENCE: 12 aagggacacg agagctgtat             #                   #                   # 20 <210> SEQ ID NO 13 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       CompB <400> SEQUENCE: 13 aagtggtagt tggaggaagc             #                   #                   # 20 <210> SEQ ID NO 14 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for       Cath-L <400> SEQUENCE: 14 attggagaga gaaaggctac             #                   #                   # 20 <210> SEQ ID NO 15 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       Cath-L <400> SEQUENCE: 15 cttgggattg tacttacagg             #                   #                   # 20 <210> SEQ ID NO 16 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for       PUMP-1 <400> SEQUENCE: 16 cttccaaagt ggtcacctac             #                   #                   # 20 <210> SEQ ID NO 17 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       PUMP-1 <400> SEQUENCE: 17 ctagactgct accatccgtc             #                   #                   # 20 <210> SEQ ID NO 18 <211> LENGTH: 17 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for       (-tubulin <400> SEQUENCE: 18 tgcattgaca acgaggc              #                   #                   #   17 <210> SEQ ID NO 19 <211> LENGTH: 17 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       (-tubulin <400> SEQUENCE: 19 ctgtcttgac attgttg              #                   #                   #   17 <210> SEQ ID NO 20 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for       Protease M <400> SEQUENCE: 20 ctgtgatcca ccctgactat             #                   #                   # 20 <210> SEQ ID NO 21 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       Protease M <400> SEQUENCE: 21 caggtggatg tatgcacact             #                   #                   # 20 <210> SEQ ID NO 22 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for       TADG-12 <400> SEQUENCE: 22 gcgcactgtg tttatgagat             #                   #                   # 20 <210> SEQ ID NO 23 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       TADG-12 <400> SEQUENCE: 23 ctctttggct tgtacttgct             #                   #                   # 20 <210> SEQ ID NO 24 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for       TADG-13 <400> SEQUENCE: 24 tgagggacat cattatgcac             #                   #                   # 20 <210> SEQ ID NO 25 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       TADG-13 <400> SEQUENCE: 25 caagttttcc ccataattgg             #                   #                   # 20 <210> SEQ ID NO 26 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: sense oligonucleotide primer # specific for       TADG-14 <400> SEQUENCE: 26 acagtacgcc tgggagacca             #                   #                   # 20 <210> SEQ ID NO 27 <211> LENGTH: 20 <212> TYPE: DNA <213> ORGANISM: Artificial sequence <220> FEATURE: <223> OTHER INFORMATION: antisense oligonucleotide pr #imer specific for       TADG-14 <400> SEQUENCE: 27 ctgagacggt gcaattctgg             #                   #                   # 20 <210> SEQ ID NO 28 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 170-178 of the  #hepsin protein <400> SEQUENCE: 28 Ser Leu Gly Arg Trp Pro Trp Gln Val                  5 <210> SEQ ID NO 29 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 191-199 of the  #hepsin protein <400> SEQUENCE: 29 Ser Leu Leu Ser Gly Asp Trp Val Leu                  5 <210> SEQ ID NO 30 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 229-237 of the  #hepsin protein <400> SEQUENCE: 30 Gly Leu Gln Leu Gly Val Gln Ala Val                  5 <210> SEQ ID NO 31 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 392-400 of the  #hepsin protein <400> SEQUENCE: 31 Lys Val Ser Asp Phe Arg Glu Trp Ile                  5 <210> SEQ ID NO 32 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 308-316 of the  #hepsin protein <400> SEQUENCE: 32 Val Leu Gln Glu Ala Arg Val Pro Ile                  5 <210> SEQ ID NO 33 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 130-138 of the  #hepsin protein <400> SEQUENCE: 33 Arg Leu Leu Glu Val Ile Ser Val Cys                  5 <210> SEQ ID NO 34 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 98-106 of the  #hepsin protein <400> SEQUENCE: 34 Ala Leu Thr His Ser Glu Leu Asp Val                  5 <210> SEQ ID NO 35 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 211-219 of the  #hepsin protein <400> SEQUENCE: 35 Val Leu Ser Arg Trp Arg Val Phe Ala                  5 <210> SEQ ID NO 36 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 26-34 of the  #hepsin protein <400> SEQUENCE: 36 Leu Leu Leu Leu Thr Ala Ile Gly Ala                  5 <210> SEQ ID NO 37 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 284-292 of the  #hepsin protein <400> SEQUENCE: 37 Ala Leu Val Asp Gly Lys Ile Cys Thr                  5 <210> SEQ ID NO 38 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 145-153 of the  #hepsin protein <400> SEQUENCE: 38 Phe Leu Ala Ala Ile Cys Gln Asp Cys                  5 <210> SEQ ID NO 39 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 192-200 of the  #hepsin protein <400> SEQUENCE: 39 Leu Leu Ser Gly Asp Trp Val Leu Thr                  5 <210> SEQ ID NO 40 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 20-28 of the  #hepsin protein <400> SEQUENCE: 40 Ala Leu Thr Ala Gly Thr Leu Leu Leu                  5 <210> SEQ ID NO 41 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 259-267 of the  #hepsin protein <400> SEQUENCE: 41 Ala Leu Val His Leu Ser Ser Pro Leu                  5 <210> SEQ ID NO 42 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 277-285 of the  #hepsin protein <400> SEQUENCE: 42 Cys Leu Pro Ala Ala Gly Gln Ala Leu                  5 <210> SEQ ID NO 43 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 230-238 of the  #hepsin protein <400> SEQUENCE: 43 Leu Gln Leu Gly Val Gln Ala Val Val                  5 <210> SEQ ID NO 44 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 268-276 of the  #hepsin protein <400> SEQUENCE: 44 Pro Leu Thr Glu Tyr Ile Gln Pro Val                  5 <210> SEQ ID NO 45 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 31-39 of the  #hepsin protein <400> SEQUENCE: 45 Ala Ile Gly Ala Ala Ser Trp Ala Ile                  5 <210> SEQ ID NO 46 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 285-293 of the  #hepsin protein <400> SEQUENCE: 46 Leu Val Asp Gly Lys Ile Cys Thr Val                  5 <210> SEQ ID NO 47 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 27-35 of the  #hepsin protein <400> SEQUENCE: 47 Leu Leu Leu Thr Ala Ile Gly Ala Ala                  5 <210> SEQ ID NO 48 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 191-199 of the  #hepsin protein <400> SEQUENCE: 48 Ser Leu Leu Ser Gly Asp Trp Val Leu                  5 <210> SEQ ID NO 49 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 163-171 of the  #hepsin protein <400> SEQUENCE: 49 Ile Val Gly Gly Arg Asp Thr Ser Leu                  5 <210> SEQ ID NO 50 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 392-400 of the  #hepsin protein <400> SEQUENCE: 50 Lys Val Ser Asp Phe Arg Glu Trp Ile                  5 <210> SEQ ID NO 51 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 64-72 of the  #hepsin protein <400> SEQUENCE: 51 Met Val Phe Asp Lys Thr Glu Gly Thr                  5 <210> SEQ ID NO 52 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 236-244 of the  #hepsin protein <400> SEQUENCE: 52 Ala Val Val Tyr His Gly Gly Tyr Leu                  5 <210> SEQ ID NO 53 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 55-63 of the  #hepsin protein <400> SEQUENCE: 53 Gln Val Ser Ser Ala Asp Ala Arg Leu                  5 <210> SEQ ID NO 54 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 130-138 of the  #hepsin protein <400> SEQUENCE: 54 Arg Leu Leu Glu Val Ile Ser Val Cys                  5 <210> SEQ ID NO 55 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 230-238 of the  #hepsin protein <400> SEQUENCE: 55 Leu Gln Leu Gly Val Gln Ala Val Val                  5 <210> SEQ ID NO 56 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 20-28 of the  #hepsin protein <400> SEQUENCE: 56 Ala Leu Thr Ala Gly Thr Leu Leu Leu                  5 <210> SEQ ID NO 57 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 259-267 of the  #hepsin protein <400> SEQUENCE: 57 Ala Leu Val His Leu Ser Ser Pro Leu                  5 <210> SEQ ID NO 58 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 277-285 of the  #hepsin protein <400> SEQUENCE: 58 Cys Leu Pro Ala Ala Gly Gln Ala Leu                  5 <210> SEQ ID NO 59 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 17-25 of the  #hepsin protein <400> SEQUENCE: 59 Lys Val Ala Ala Leu Thr Ala Gly Thr                  5 <210> SEQ ID NO 60 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 285-293 of the  #hepsin protein <400> SEQUENCE: 60 Leu Val Asp Gly Lys Ile Cys Thr Val                  5 <210> SEQ ID NO 61 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 308-316 of the  #hepsin protein <400> SEQUENCE: 61 Val Leu Gln Glu Ala Arg Val Pro Ile                  5 <210> SEQ ID NO 62 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 27-35 of the  #hepsin protein <400> SEQUENCE: 62 Leu Leu Leu Thr Ala Ile Gly Ala Ala                  5 <210> SEQ ID NO 63 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 229-237 of the  #hepsin protein <400> SEQUENCE: 63 Gly Leu Gln Leu Gly Val Gln Ala Val                  5 <210> SEQ ID NO 64 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 313-321 of the  #hepsin protein <400> SEQUENCE: 64 Arg Val Pro Ile Ile Ser Asn Asp Val                  5 <210> SEQ ID NO 65 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 88-96 of the  #hepsin protein <400> SEQUENCE: 65 Leu Ser Cys Glu Glu Met Gly Phe Leu                  5 <210> SEQ ID NO 66 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 192-200 of the  #hepsin protein <400> SEQUENCE: 66 Leu Leu Ser Gly Asp Trp Val Leu Thr                  5 <210> SEQ ID NO 67 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 284-292 of the  #hepsin protein <400> SEQUENCE: 67 Ala Leu Val Asp Gly Lys Ile Cys Thr                  5 <210> SEQ ID NO 68 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 89-97 of the  #hepsin protein <400> SEQUENCE: 68 Ser Cys Glu Glu Met Gly Phe Leu Arg                  5 <210> SEQ ID NO 69 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 58-66 of the  #hepsin protein <400> SEQUENCE: 69 Ser Ala Asp Ala Arg Leu Met Val Phe                  5 <210> SEQ ID NO 70 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 393-401 of the  #hepsin protein <400> SEQUENCE: 70 Val Ser Asp Phe Arg Glu Trp Ile Phe                  5 <210> SEQ ID NO 71 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 407-415 of the  #hepsin protein <400> SEQUENCE: 71 His Ser Glu Ala Ser Gly Met Val Thr                  5 <210> SEQ ID NO 72 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 137-145 of the  #hepsin protein <400> SEQUENCE: 72 Val Cys Asp Cys Pro Arg Gly Arg Phe                  5 <210> SEQ ID NO 73 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 269-277 of the  #hepsin protein <400> SEQUENCE: 73 Leu Thr Glu Tyr Ile Gln Pro Val Cys                  5 <210> SEQ ID NO 74 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 47-55 of the  #hepsin protein <400> SEQUENCE: 74 Asp Gln Glu Pro Leu Tyr Pro Val Gln                  5 <210> SEQ ID NO 75 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 119-127 of the  #hepsin protein <400> SEQUENCE: 75 Cys Val Asp Glu Gly Arg Leu Pro His                  5 <210> SEQ ID NO 76 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 68-76 of the  #hepsin protein <400> SEQUENCE: 76 Lys Thr Glu Gly Thr Trp Arg Leu Leu                  5 <210> SEQ ID NO 77 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 101-109 of the  #hepsin protein <400> SEQUENCE: 77 His Ser Glu Leu Asp Val Arg Thr Ala                  5 <210> SEQ ID NO 78 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 250-258 of the  #hepsin protein <400> SEQUENCE: 78 Asn Ser Glu Glu Asn Ser Asn Asp Ile                  5 <210> SEQ ID NO 79 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 293-301 of the  #hepsin protein <400> SEQUENCE: 79 Val Thr Gly Trp Gly Asn Thr Gln Tyr                  5 <210> SEQ ID NO 80 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 231-239 of the  #hepsin protein <400> SEQUENCE: 80 Gln Leu Gly Val Gln Ala Val Val Tyr                  5 <210> SEQ ID NO 81 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 103-111 of the  #hepsin protein <400> SEQUENCE: 81 Glu Leu Asp Val Arg Thr Ala Gly Ala                  5 <210> SEQ ID NO 82 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 378-386 of the  #hepsin protein <400> SEQUENCE: 82 Gly Thr Gly Cys Ala Leu Ala Gln Lys                  5 <210> SEQ ID NO 83 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 358-366 of the  #hepsin protein <400> SEQUENCE: 83 Val Cys Glu Asp Ser Ile Ser Arg Thr                  5 <210> SEQ ID NO 84 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 264-272 of the  #hepsin protein <400> SEQUENCE: 84 Ser Ser Pro Leu Pro Leu Thr Glu Tyr                  5 <210> SEQ ID NO 85 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 87-95 of the  #hepsin protein <400> SEQUENCE: 85 Gly Leu Ser Cys Glu Glu Met Gly Phe                  5 <210> SEQ ID NO 86 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 272-280 of the  #hepsin protein <400> SEQUENCE: 86 Tyr Ile Gln Pro Val Cys Leu Pro Ala                  5 <210> SEQ ID NO 87 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 345-353 of the  #hepsin protein <400> SEQUENCE: 87 Gly Ile Asp Ala Cys Gln Gly Asp Ser                  5 <210> SEQ ID NO 88 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 301-309 of the  #hepsin protein <400> SEQUENCE: 88 Tyr Tyr Gly Gln Gln Ala Gly Val Leu                  5 <210> SEQ ID NO 89 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 238-246 of the  #hepsin protein <400> SEQUENCE: 89 Val Tyr His Gly Gly Tyr Leu Pro Phe                  5 <210> SEQ ID NO 90 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 204-212 of the  #hepsin protein <400> SEQUENCE: 90 Cys Phe Pro Glu Arg Asn Arg Val Leu                  5 <210> SEQ ID NO 91 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 117-125 of the  #hepsin protein <400> SEQUENCE: 91 Phe Phe Cys Val Asp Glu Gly Arg Leu                  5 <210> SEQ ID NO 92 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 124-132 of the  #hepsin protein <400> SEQUENCE: 92 Arg Leu Pro His Thr Gln Arg Leu Leu                  5 <210> SEQ ID NO 93 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 80-88 of the  #hepsin protein <400> SEQUENCE: 93 Arg Ser Asn Ala Arg Val Ala Gly Leu                  5 <210> SEQ ID NO 94 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 68-76 of the  #hepsin protein <400> SEQUENCE: 94 Lys Thr Glu Gly Thr Trp Arg Leu Leu                  5 <210> SEQ ID NO 95 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 340-348 of the  #hepsin protein <400> SEQUENCE: 95 Gly Tyr Pro Glu Gly Gly Ile Asp Ala                  5 <210> SEQ ID NO 96 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 242-250 of the  #hepsin protein <400> SEQUENCE: 96 Gly Tyr Leu Pro Phe Arg Asp Pro Asn                  5 <210> SEQ ID NO 97 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 51-59 of the  #hepsin protein <400> SEQUENCE: 97 Leu Tyr Pro Val Gln Val Ser Ser Ala                  5 <210> SEQ ID NO 98 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 259-267 of the  #hepsin protein <400> SEQUENCE: 98 Ala Leu Val His Leu Ser Ser Pro Leu                  5 <210> SEQ ID NO 99 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 277-285 of the  #hepsin protein <400> SEQUENCE: 99 Cys Leu Pro Ala Ala Gly Gln Ala Leu                  5 <210> SEQ ID NO 100 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 191-199 of the  #hepsin protein <400> SEQUENCE: 100 Ser Leu Leu Ser Gly Asp Trp Val Leu                  5 <210> SEQ ID NO 101 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 210-218 of the  #hepsin protein <400> SEQUENCE: 101 Arg Val Leu Ser Arg Trp Arg Val Phe                  5 <210> SEQ ID NO 102 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 222-230 of the  #hepsin protein <400> SEQUENCE: 102 Val Ala Gln Ala Ser Pro His Gly Leu                  5 <210> SEQ ID NO 103 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 236-244 of the  #hepsin protein <400> SEQUENCE: 103 Ala Val Val Tyr His Gly Gly Tyr Leu                  5 <210> SEQ ID NO 104 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 19-27 of the  #hepsin protein <400> SEQUENCE: 104 Ala Ala Leu Thr Ala Gly Thr Leu Leu                  5 <210> SEQ ID NO 105 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 36-44 of the  #hepsin protein <400> SEQUENCE: 105 Ser Trp Ala Ile Val Ala Val Leu Leu                  5 <210> SEQ ID NO 106 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 35-43 of the  #hepsin protein <400> SEQUENCE: 106 Ala Ser Trp Ala Ile Val Ala Val Leu                  5 <210> SEQ ID NO 107 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 300-308 of the  #hepsin protein <400> SEQUENCE: 107 Gln Tyr Tyr Gly Gln Gln Ala Gly Val                  5 <210> SEQ ID NO 108 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 363-371 of the  #hepsin protein <400> SEQUENCE: 108 Ile Ser Arg Thr Pro Arg Trp Arg Leu                  5 <210> SEQ ID NO 109 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 366-374 of the  #hepsin protein <400> SEQUENCE: 109 Thr Pro Arg Trp Arg Leu Cys Gly Ile                  5 <210> SEQ ID NO 110 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 236-244 of the  #hepsin protein <400> SEQUENCE: 110 Ala Val Val Tyr His Gly Gly Tyr Leu                  5 <210> SEQ ID NO 111 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 13-21 of the  #hepsin protein <400> SEQUENCE: 111 Cys Ser Arg Pro Lys Val Ala Ala Leu                  5 <210> SEQ ID NO 112 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 179-187 of the  #hepsin protein <400> SEQUENCE: 112 Ser Leu Arg Tyr Asp Gly Ala His Leu                  5 <210> SEQ ID NO 113 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 43-51 of the  #hepsin protein <400> SEQUENCE: 113 Leu Leu Arg Ser Asp Gln Glu Pro Leu                  5 <210> SEQ ID NO 114 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 19-27 of the  #hepsin protein <400> SEQUENCE: 114 Ala Ala Leu Thr Ala Gly Thr Leu Leu                  5 <210> SEQ ID NO 115 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 55-63 of the  #hepsin protein <400> SEQUENCE: 115 Gln Val Ser Ser Ala Asp Ala Arg Leu                  5 <210> SEQ ID NO 116 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 163-171 of the  #hepsin protein <400> SEQUENCE: 116 Ile Val Gly Gly Arg Asp Thr Ser Leu                  5 <210> SEQ ID NO 117 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 140-148 of the  #hepsin protein <400> SEQUENCE: 117 Cys Pro Arg Gly Arg Phe Leu Ala Ala                  5 <210> SEQ ID NO 118 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 20-28 of the  #hepsin protein <400> SEQUENCE: 118 Ala Leu Thr Ala Gly Thr Leu Leu Leu                  5 <210> SEQ ID NO 119 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 409-417 of the  #hepsin protein <400> SEQUENCE: 119 Glu Ala Ser Gly Met Val Thr Gln Leu                  5 <210> SEQ ID NO 120 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 259-267 of the  #hepsin protein <400> SEQUENCE: 120 Ala Leu Val His Leu Ser Ser Pro Leu                  5 <210> SEQ ID NO 121 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 35-43 of the  #hepsin protein <400> SEQUENCE: 121 Ala Ser Trp Ala Ile Val Ala Val Leu                  5 <210> SEQ ID NO 122 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 184-192 of the  #hepsin protein <400> SEQUENCE: 122 Gly Ala His Leu Cys Gly Gly Ser Leu                  5 <210> SEQ ID NO 123 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 18-26 of the  #hepsin protein <400> SEQUENCE: 123 Val Ala Ala Leu Thr Ala Gly Thr Leu                  5 <210> SEQ ID NO 124 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 222-230 of the  #hepsin protein <400> SEQUENCE: 124 Val Ala Gln Ala Ser Pro His Gly Leu                  5 <210> SEQ ID NO 125 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 224-232 of the  #hepsin protein <400> SEQUENCE: 125 Gln Ala Ser Pro His Gly Leu Gln Leu                  5 <210> SEQ ID NO 126 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 265-273 of the  #hepsin protein <400> SEQUENCE: 126 Ser Pro Leu Pro Leu Thr Glu Tyr Ile                  5 <210> SEQ ID NO 127 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 355-363 of the  #hepsin protein <400> SEQUENCE: 127 Gly Pro Phe Val Cys Glu Asp Ser Ile                  5 <210> SEQ ID NO 128 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 13-21 of the  #hepsin protein <400> SEQUENCE: 128 Cys Ser Arg Pro Lys Val Ala Ala Leu                  5 <210> SEQ ID NO 129 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 366-374 of the  #hepsin protein <400> SEQUENCE: 129 Thr Pro Arg Trp Arg Leu Cys Gly Ile                  5 <210> SEQ ID NO 130 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 140-148 of the  #hepsin protein <400> SEQUENCE: 130 Cys Pro Arg Gly Arg Phe Leu Ala Ala                  5 <210> SEQ ID NO 131 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 152-160 of the  #hepsin protein <400> SEQUENCE: 131 Asp Cys Gly Arg Arg Lys Leu Pro Val                  5 <210> SEQ ID NO 132 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 363-371 of the  #hepsin protein <400> SEQUENCE: 132 Ile Ser Arg Thr Pro Arg Trp Arg Leu                  5 <210> SEQ ID NO 133 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 133-141 of the  #hepsin protein <400> SEQUENCE: 133 Ile Val Gly Gly Arg Asp Thr Ser Leu                  5 <210> SEQ ID NO 134 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 331-339 of the  #hepsin protein <400> SEQUENCE: 134 Gln Ile Lys Pro Lys Met Phe Cys Ala                  5 <210> SEQ ID NO 135 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 80-88 of the  #hepsin protein <400> SEQUENCE: 135 Arg Ser Asn Ala Arg Val Ala Gly Leu                  5 <210> SEQ ID NO 136 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 179-187 of the  #hepsin protein <400> SEQUENCE: 136 Ser Leu Arg Tyr Asp Gly Ala His Leu                  5 <210> SEQ ID NO 137 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 43-51 of the  #hepsin protein <400> SEQUENCE: 137 Leu Leu Arg Ser Asp Gln Glu Pro Leu                  5 <210> SEQ ID NO 138 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 409-417 of the  #hepsin protein <400> SEQUENCE: 138 Glu Ala Ser Gly Met Val Thr Gln Leu                  5 <210> SEQ ID NO 139 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 311-319 of the  #hepsin protein <400> SEQUENCE: 139 Glu Ala Arg Val Pro Ile Ile Ser Asn                  5 <210> SEQ ID NO 140 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 222-230 of the  #hepsin protein <400> SEQUENCE: 140 Val Ala Gln Ala Ser Pro His Gly Leu                  5 <210> SEQ ID NO 141 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 19-27 of the  #hepsin protein <400> SEQUENCE: 141 Ala Ala Leu Thr Ala Gly Thr Leu Leu                  5 <210> SEQ ID NO 142 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 18-26 of the  #hepsin protein <400> SEQUENCE: 142 Val Ala Ala Leu Thr Ala Gly Thr Leu                  5 <210> SEQ ID NO 143 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 184-192 of the  #hepsin protein <400> SEQUENCE: 143 Gly Ala His Leu Cys Gly Gly Ser Leu                  5 <210> SEQ ID NO 144 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 224-232 of the  #hepsin protein <400> SEQUENCE: 144 Gln Ala Ser Pro His Gly Leu Gln Leu                  5 <210> SEQ ID NO 145 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 82-90 of the  #hepsin protein <400> SEQUENCE: 145 Asn Ala Arg Val Ala Gly Leu Ser Cys                  5 <210> SEQ ID NO 146 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 204-212 of the  #hepsin protein <400> SEQUENCE: 146 Cys Phe Pro Glu Arg Asn Arg Val Leu                  5 <210> SEQ ID NO 147 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 212-220 of the  #hepsin protein <400> SEQUENCE: 147 Leu Ser Arg Trp Arg Val Phe Ala Gly                  5 <210> SEQ ID NO 148 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 172-180 of the  #hepsin protein <400> SEQUENCE: 148 Gly Arg Trp Pro Trp Gln Val Ser Leu                  5 <210> SEQ ID NO 149 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 44-52 of the  #hepsin protein <400> SEQUENCE: 149 Leu Arg Ser Asp Gln Glu Pro Leu Tyr                  5 <210> SEQ ID NO 150 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 155-163 of the  #hepsin protein <400> SEQUENCE: 150 Arg Arg Lys Leu Pro Val Asp Arg Ile                  5 <210> SEQ ID NO 151 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 213-221 of the  #hepsin protein <400> SEQUENCE: 151 Ser Arg Trp Arg Val Phe Ala Gly Ala                  5 <210> SEQ ID NO 152 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 166-174 of the  #hepsin protein <400> SEQUENCE: 152 Gly Arg Asp Thr Ser Leu Gly Arg Trp                  5 <210> SEQ ID NO 153 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 369-377 of the  #hepsin protein <400> SEQUENCE: 153 Trp Arg Leu Cys Gly Ile Val Ser Trp                  5 <210> SEQ ID NO 154 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 180-188 of the  #hepsin protein <400> SEQUENCE: 154 Leu Arg Tyr Asp Gly Ala His Leu Cys                  5 <210> SEQ ID NO 155 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 96-104 of the  #hepsin protein <400> SEQUENCE: 155 Leu Arg Ala Leu Thr His Ser Glu Leu                  5 <210> SEQ ID NO 156 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 396-404 of the  #hepsin protein <400> SEQUENCE: 156 Phe Arg Glu Trp Ile Phe Gln Ala Ile                  5 <210> SEQ ID NO 157 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 123-131 of the  #hepsin protein <400> SEQUENCE: 157 Gly Arg Leu Pro His Thr Gln Arg Leu                  5 <210> SEQ ID NO 158 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 207-215 of the  #hepsin protein <400> SEQUENCE: 158 Glu Arg Asn Arg Val Leu Ser Arg Trp                  5 <210> SEQ ID NO 159 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 209-217 of the  #hepsin protein <400> SEQUENCE: 159 Asn Arg Val Leu Ser Arg Trp Arg Val                  5 <210> SEQ ID NO 160 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 14-22 of the  #hepsin protein <400> SEQUENCE: 160 Ser Arg Pro Lys Val Ala Ala Leu Thr                  5 <210> SEQ ID NO 161 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 106-114 of the  #hepsin protein <400> SEQUENCE: 161 Val Arg Thr Ala Gly Ala Asn Gly Thr                  5 <210> SEQ ID NO 162 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 129-137 of the  #hepsin protein <400> SEQUENCE: 162 Gln Arg Leu Leu Glu Val Ile Ser Val                  5 <210> SEQ ID NO 163 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 349-357 of the  #hepsin protein <400> SEQUENCE: 163 Cys Gln Gly Asp Ser Gly Gly Pro Phe                  5 <210> SEQ ID NO 164 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 61-69 of the  #hepsin protein <400> SEQUENCE: 164 Ala Arg Leu Met Val Phe Asp Lys Thr                  5 <210> SEQ ID NO 165 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 215-223 of the  #hepsin protein <400> SEQUENCE: 165 Trp Arg Val Phe Ala Gly Ala Val Ala                  5 <210> SEQ ID NO 166 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 143-151 of the  #hepsin protein <400> SEQUENCE: 166 Gly Arg Phe Leu Ala Ala Ile Cys Gln                  5 <210> SEQ ID NO 167 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 246-254 of the  #hepsin protein <400> SEQUENCE: 167 Phe Arg Asp Pro Asn Ser Glu Glu Asn                  5 <210> SEQ ID NO 168 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 132-140 of the  #hepsin protein <400> SEQUENCE: 168 Leu Glu Val Ile Ser Val Cys Asp Cys                  5 <210> SEQ ID NO 169 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 91-99 of the  #hepsin protein <400> SEQUENCE: 169 Glu Glu Met Gly Phe Leu Arg Ala Leu                  5 <210> SEQ ID NO 170 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 264-272 of the  #hepsin protein <400> SEQUENCE: 170 Ser Ser Pro Leu Pro Leu Thr Glu Tyr                  5 <210> SEQ ID NO 171 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 310-318 of the  #hepsin protein <400> SEQUENCE: 171 Gln Glu Ala Arg Val Pro Ile Ile Ser                  5 <210> SEQ ID NO 172 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 319-327 of the  #hepsin protein <400> SEQUENCE: 172 Asn Asp Val Cys Asn Gly Ala Asp Phe                  5 <210> SEQ ID NO 173 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 4-12 of the h #epsin protein <400> SEQUENCE: 173 Lys Glu Gly Gly Arg Thr Val Pro Cys                  5 <210> SEQ ID NO 174 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 251-259 of the  #hepsin protein <400> SEQUENCE: 174 Ser Glu Glu Asn Ser Asn Asp Ile Ala                  5 <210> SEQ ID NO 175 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 256-264 of the  #hepsin protein <400> SEQUENCE: 175 Asn Asp Ile Ala Leu Val His Leu Ser                  5 <210> SEQ ID NO 176 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 294-302 of the  #hepsin protein <400> SEQUENCE: 176 Thr Gly Trp Gly Asn Thr Gln Tyr Tyr                  5 <210> SEQ ID NO 177 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 361-369 of the  #hepsin protein <400> SEQUENCE: 177 Asp Ser Ile Ser Arg Thr Pro Arg Trp                  5 <210> SEQ ID NO 178 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 235-243 of the  #hepsin protein <400> SEQUENCE: 178 Gln Ala Val Val Tyr His Gly Gly Tyr                  5 <210> SEQ ID NO 179 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 109-117 of the  #hepsin protein <400> SEQUENCE: 179 Ala Gly Ala Asn Gly Thr Ser Gly Phe                  5 <210> SEQ ID NO 180 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 270-278 of the  #hepsin protein <400> SEQUENCE: 180 Thr Glu Tyr Ile Gln Pro Val Cys Leu                  5 <210> SEQ ID NO 181 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 174-182 of the  #hepsin protein <400> SEQUENCE: 181 Trp Pro Trp Gln Val Ser Leu Arg Tyr <210> SEQ ID NO 182 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 293-301 of the  #hepsin protein <400> SEQUENCE: 182 Val Thr Gly Trp Gly Asn Thr Gln Tyr                  5 <210> SEQ ID NO 183 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 69-77 of the  #hepsin protein <400> SEQUENCE: 183 Thr Glu Gly Thr Trp Arg Leu Leu Cys                  5 <210> SEQ ID NO 184 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 90-98 of the  #hepsin protein <400> SEQUENCE: 184 Cys Glu Glu Met Gly Phe Leu Arg Ala                  5 <210> SEQ ID NO 185 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 252-260 of the  #hepsin protein <400> SEQUENCE: 185 Glu Glu Asn Ser Asn Asp Ile Ala Leu                  5 <210> SEQ ID NO 186 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 48-56 of the  #hepsin protein <400> SEQUENCE: 186 Gln Glu Pro Leu Tyr Pro Val Gln Val                  5 <210> SEQ ID NO 187 <211> LENGTH: 9 <212> TYPE: PRT <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: Residues 102-110 of the  #hepsin protein <400> SEQUENCE: 187 Ser Glu Leu Asp Val Arg Thr Ala Gly                  5 <210> SEQ ID NO 188 <211> LENGTH: 1783 <212> TYPE: DNA <213> ORGANISM: Homo sapiens <220> FEATURE: <223> OTHER INFORMATION: full length cDNA of he #psin <400> SEQUENCE: 188 tcgagcccgc tttccaggga ccctacctga gggcccacag gtgaggcagc   #              50 ctggcctagc aggccccacg ccaccgcctc tgcctccagg ccgcccgctg   #             100 ctgcggggcc accatgctcc tgcccaggcc tggagactga cccgaccccg   #             150 gcactacctc gaggctccgc ccccacctgc tggaccccag ggtcccaccc   #             200 tggcccagga ggtcagccag ggaatcatta acaagaggca gtgacatggc   #             250 gcagaaggag ggtggccgga ctgtgccatg ctgctccaga cccaaggtgg   #             300 cagctctcac tgcggggacc ctgctacttc tgacagccat cggggcggca   #             350 tcctgggcca ttgtggctgt tctcctcagg agtgaccagg agccgctgta   #             400 cccagtgcag gtcagctctg cggacgctcg gctcatggtc tttgacaaga   #             450 cggaagggac gtggcggctg ctgtgctcct cgcgctccaa cgccagggta   #             500 gccggactca gctgcgagga gatgggcttc ctcagggcac tgacccactc   #             550 cgagctggac gtgcgaacgg cgggcgccaa tggcacgtcg ggcttcttct   #             600 gtgtggacga ggggaggctg ccccacaccc agaggctgct ggaggtcatc   #             650 tccgtgtgtg attgccccag aggccgtttc ttggccgcca tctgccaaga   #             700 ctgtggccgc aggaagctgc ccgtggaccg catcgtggga ggccgggaca   #             750 ccagcttggg ccggtggccg tggcaagtca gccttcgcta tgatggagca   #             800 cacctctgtg ggggatccct gctctccggg gactgggtgc tgacagccgc   #             850 ccactgcttc ccggagcgga accgggtcct gtcccgatgg cgagtgtttg   #             900 ccggtgccgt ggcccaggcc tctccccacg gtctgcagct gggggtgcag   #             950 gctgtggtct accacggggg ctatcttccc tttcgggacc ccaacagcga   #            1000 ggagaacagc aacgatattg ccctggtcca cctctccagt cccctgcccc   #            1050 tcacagaata catccagcct gtgtgcctcc cagctgccgg ccaggccctg   #            1100 gtggatggca agatctgtac cgtgacgggc tggggcaaca cgcagtacta   #            1150 tggccaacag gccggggtac tccaggaggc tcgagtcccc ataatcagca   #            1200 atgatgtctg caatggcgct gacttctatg gaaaccagat caagcccaag   #            1250 atgttctgtg ctggctaccc cgagggtggc attgatgcct gccagggcga   #            1300 cagcggtggt ccctttgtgt gtgaggacag catctctcgg acgccacgtt   #            1350 ggcggctgtg tggcattgtg agttggggca ctggctgtgc cctggcccag   #            1400 aagccaggcg tctacaccaa agtcagtgac ttccgggagt ggatcttcca   #            1450 ggccataaag actcactccg aagccagcgg catggtgacc cagctctgac   #            1500 cggtggcttc tcgctgcgca gcctccaggg cccgaggtga tcccggtggt   #            1550 gggatccacg ctgggccgag gatgggacgt ttttcttctt gggcccggtc   #            1600 cacaggtcca aggacaccct ccctccaggg tcctctcttc cacagtggcg   #            1650 ggcccactca gccccgagac cacccaacct caccctcctg acccccatgt   #            1700 aaatattgtt ctgctgtctg ggactcctgt ctaggtgccc ctgatgatgg   #            1750 gatgctcttt aaataataaa gatggttttg att        #                   #       1783 

What is claimed is:
 1. A method of producing activated T cells directed toward hepsin, comprising the steps of: exposing dendritic cells to a hepsin fragment consisting of the amino acid sequence of SEQ ID NO. 28 or 148, thereby producing activated dendritic cells; exposing said activated dendritic cells to T cells, wherein said activated dendritic cells would present said hepsin fragment to said T cells, thereby producing activated T cells directed toward said hepsin fragment.
 2. The method of claim 1, wherein said dendritic cells, which are isolated from an individual prior to said exposure to said hepsin fragment, are reintroduced into said individual subsequent to said exposure to said hepsin fragment. 